ChatGPT answers, unedited

For a small ecommerce store where low monthly cost + simple segmentation matter most, I’d shortlist Omnisend and Brevo, with Omnisend getting the edge if ecommerce automation is important.

My recommendation

omnisend.com is probably the best fit if you want one relatively simple system for email + SMS + ecommerce segmentation.

• Free: $0, up to 250 contacts and 500 emails/month. Segmentation and basic automations are included. Omnisend Omnisend Help Center
• Standard: starts at $16/month normally, with the current introductory offer showing $11.20/month for the first 3 months. It supports up to 6,000 emails/month at the 500-contact tier. Omnisend Help Center Omnisend
• SMS: under the current pricing, SMS requires Pro, starting at $59/month normally, with SMS charged separately; U.S./Canada rates start at $0.007/message depending on volume. Omnisend Help Center Omnisend Help Center
• Segmentation: particularly ecommerce-oriented—purchase history, engagement, browsing behavior, customer lifecycle, etc., with dynamic segments. Omnisend Help Center Omnisend

The cheaper alternative

brevo.com is worth considering if keeping the monthly subscription extremely low is more important than having ecommerce-specific tooling.

Its free plan includes email and SMS campaigns, and paid plans start at $9/month. Brevo Help

The tradeoff is that I’d choose Omnisend when you want segmentation based heavily on shopping behavior and automated ecommerce journeys; Brevo is more of a general-purpose marketing/CRM platform.

One other option

klaviyo.com is very capable for ecommerce segmentation, but I'd look at it mainly if you expect your marketing program to become more sophisticated. Its free tier is 250 active profiles/500 emails per month, plus $5 of mobile-message credit, so it's easy to test. Klaviyo AU

Bottom line: For a small store, I'd start with Omnisend, particularly if you want straightforward segments like new customers, repeat buyers, abandoned carts, VIP customers, and customers who haven't purchased in 90 days. If your list is tiny and you primarily care about minimizing the monthly software bill, Brevo deserves a serious look.

If you tell me roughly how many email contacts you have and how many SMS messages you send per month, I can calculate the likely monthly cost for Omnisend vs. Brevo vs. Klaviyo.

For a small ecommerce store where low monthly cost + simple segmentation + both email and SMS are the priorities, I’d look at these three:

• omnisend.com — probably the best fit for ecommerce. Its segmentation is built around shopping behavior, purchases, clicks, signups, etc., and it has prebuilt ecommerce automations such as abandoned cart, welcome, and post-purchase flows. Current pricing starts at $0, with paid plans starting around $16/month normally; however, SMS now requires Pro for new subscribers, with SMS priced separately starting around $0.007/message for US/Canada at higher volumes. Omnisend Help Center Omnisend
• brevo.com — best if absolute monthly cost is the priority. Its free plan includes email and SMS campaigns, and paid plans start at $9/month. The tradeoff is that its ecommerce segmentation/automation experience isn't as ecommerce-focused as Omnisend's. Brevo Help
• klaviyo.com — excellent segmentation, but I'd consider it if you're willing to spend more as you grow. Its free tier supports email/SMS editors, automation and segmentation for up to 250 active profiles and 500 emails/month, but costs rise as your customer database and messaging volume grow. Klaviyo

My practical pick

Start with Omnisend if your store is Shopify/WooCommerce/etc. and you specifically want ecommerce features without having to build complicated segments yourself.

If you're very price-sensitive and your list is small, I'd test Brevo first.

If you tell me roughly how many email contacts you have and how many SMS messages you expect to send per month, I can compare the likely monthly cost of Omnisend vs. Brevo vs. Klaviyo for your store.

For a small ecommerce store, I’d look closely at Omnisend first if you want email + SMS in one simple ecommerce-focused platform.

• Omnisend — The current Standard plan starts at $16/month normally (the site is currently showing a temporary $11.20 introductory price), with up to 2,500 contacts and 6,000 emails/month. It supports ecommerce-oriented segmentation such as purchase history, engagement, lifecycle stage, and customer behavior. Omnisend Help Center Omnisend
• SMS: For new customers, SMS is on the Pro plan, with US/Canada rates starting at $0.007/SMS at higher volume; lower-volume tiers are $0.009 or $0.0085 depending on monthly SMS spend. Omnisend Omnisend Help Center
• Segmentation: Omnisend has prebuilt behavioral segments and an AI segment builder, which is useful if you don't want to construct complicated rules yourself. Omnisend

Brevo is another one I'd consider if keeping the fixed monthly subscription especially low matters more than having deep ecommerce segmentation. Its Starter plan begins at $9/month, and its free plan includes email and SMS campaigns, though its pricing model and ecommerce features differ from Omnisend. Brevo Help

I would not automatically choose Klaviyo for a cost-conscious small store: it's powerful, but you're generally paying for a broader set of advanced capabilities that you may not need yet.

My practical shortlist

If you tell me roughly how many email contacts you have and how many SMS messages you expect to send per month, I can calculate the approximate monthly cost for each and show you which pricing structure fits your store.

For a small ecommerce store where the priorities are low monthly cost + simple segmentation, I would shortlist these:

SMB Compare Listicler## My recommendation

1. Best overall for a small store: Omnisend

I’d start here for most small ecommerce shops.

Why:

• Built specifically for ecommerce (Shopify/WooCommerce-style stores)
• Email and SMS live together, so you can make simple flows like: - New subscriber → welcome email
• Added to cart → reminder email/text
• Purchased → thank-you + review request
• No purchase in 90 days → win-back campaign
• Segments are easy: - “Bought product X”
• “Spent over $100”
• “Has not purchased in 60 days”
• “VIP customers”

It is generally positioned as a lower-cost alternative to Klaviyo for smaller stores. SMB Compare Listicler

2. Cheapest option: Brevo

Pick this if cost matters more than ecommerce sophistication.

Good for:

• A few thousand contacts
• Regular newsletters
• Basic customer groups
• Occasional SMS blasts

Tradeoff:

• Segmentation and ecommerce automation are not as deep as ecommerce-first tools. SMB Compare

3. Best long-term marketing platform: Klaviyo

Klaviyo is probably the strongest if email/SMS becomes a major revenue channel.

Great for:

• Customer lifetime value segments
• Product recommendations
• Complex flows
• Detailed purchase behavior

The downside is that costs can rise as your customer database grows. Noctilucens

What I would avoid for your situation

• Enterprise SMS tools like Attentive — usually unnecessary for a small shop.
• Building SMS yourself with Twilio — cheap infrastructure, but you would need to build segmentation, compliance workflows, and campaign tools. Resources Rework

A simple setup I’d use

For a small store:

1. Start with Omnisend
2. Create only 5 segments: - New subscribers
3. First-time buyers
4. Repeat buyers
5. High spenders
6. Customers inactive 60–90 days
7. Build 4 automations: - Welcome series
8. Abandoned cart
9. Post-purchase follow-up
10. Win-back campaign

That gets most of the revenue benefit without paying for complicated marketing features.

If you tell me your store platform (Shopify, WooCommerce, Etsy, etc.), monthly order volume, and roughly email list size, I can narrow this to the cheapest choice that will actually fit.

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d shortlist these:

• omnisend.com — my pick for most ecommerce stores. It’s built specifically around ecommerce, with email/SMS flows, customer segments, abandoned-cart messaging, and product-oriented automation. Its current Pro plan starts at $59/month list price (with a temporary new-customer discount shown currently), while SMS starts at $0.007/message for U.S./Canada at qualifying volume. Omnisend Help Center Omnisend
• brevo.com — best if absolute monthly subscription cost is the priority. Its free tier includes email and SMS campaigns, and paid plans start at $9/month. Brevo Help
• klaviyo.com — excellent, but I'd skip it for a very small budget. It's powerful for ecommerce segmentation, but you're generally paying for capabilities you may not need yet.

What I'd choose

Omnisend if you want one straightforward ecommerce marketing system and expect to use SMS regularly.

Brevo if you're sending relatively little SMS and want to keep the fixed monthly bill as close to zero as possible.

One important wrinkle: Omnisend changed its SMS pricing in May 2026. New subscribers need the Pro plan for SMS, so the $16-ish Standard plan isn't actually a cheap email+SMS option anymore. Omnisend Help Center Omnisend Help Center

If you tell me roughly how many email contacts you have (e.g. 500, 2,000, 5,000) and how many SMS messages you expect to send per month, I can calculate the likely monthly cost of Omnisend vs. Brevo vs. Klaviyo and give you the cheapest choice.

For a small ecommerce store where low monthly cost + simple segmentation matter most, I’d shortlist these:

1. omnisend.com — my overall pick

• Built specifically for ecommerce, with email + SMS + web push.
• Paid plans start around $16/month, and it has ecommerce-focused segments and prebuilt automations.
• Segmentation is simpler than Klaviyo but still covers useful things like recent purchasers, repeat buyers, abandoned carts, and engagement. Omnisend Omnisend
• Best if: you want one straightforward platform for both email and SMS without spending much.
• brevo.com — cheapest if your email volume is low

• Starts around $9/month, with SMS purchased separately.
• Its pricing is primarily based on emails sent rather than number of contacts, which can be very attractive if you have a large list but don't email constantly. Omnisend Omnisend
• Best if: keeping the monthly bill extremely low is the priority and your campaigns are relatively infrequent.
• klaviyo.com — best segmentation, but I'd probably skip it initially

• Excellent ecommerce data and behavioral segmentation.
• But it gets noticeably more expensive as your active customer list grows; email starts around $20/month, with SMS as an additional cost. Omnisend
• Best if: you're already doing sophisticated lifecycle marketing and the extra revenue justifies the cost.

My recommendation

Start with Omnisend if you want email and SMS in the same simple system. It hits the sweet spot between cost, ecommerce functionality, and ease of segmentation.

I'd use segments such as:

• New subscribers who haven't purchased
• First-time customers
• Repeat customers
• Customers who haven't purchased in 60–90 days
• High-value customers
• Abandoned cart
• Product/category purchasers

If you're very price-sensitive, though, Brevo may be cheaper, particularly if you have lots of contacts but send relatively few emails. Omnisend

If you tell me roughly (1) number of email subscribers, (2) monthly email sends, (3) monthly SMS volume, and (4) Shopify/WooCommerce/other, I can calculate which of the three is likely to be cheapest for your store.

For a small ecommerce store where low monthly cost + simple segmentation matter most, I’d usually shortlist these:

Omnisend Omnisend### My recommendation for your situation

Start with Omnisend if you need both email and SMS. It is built specifically for ecommerce, has simple automation templates, and is generally positioned as a lower-cost alternative to Klaviyo for smaller stores. It supports segments like:

• Purchased product X
• Bought within the last 30/60/90 days
• High-value customers
• Never purchased
• Abandoned cart visitors
• Engaged vs. inactive subscribers

OmnisendA simple setup I’d build first:

1. Welcome series

• New subscriber → discount or incentive → product education
• Abandoned cart SMS/email

• Reminder after a few hours
• Follow-up after 1–2 days
• Post-purchase

• Thank you
• Review request
• Cross-sell after delivery
• Customer segments

• VIP buyers (high spend)
• Repeat customers
• One-time buyers
• Dormant customers (no purchase in 90–180 days)

When I would choose something else

• Choose Klaviyo if your store already has significant sales volume and you want very advanced targeting (predictive segments, detailed customer behavior analysis). It is powerful but usually harder to justify for a small shop. Omnisend
• Choose Brevo if your priority is simply “send affordable campaigns and occasional texts” rather than deep ecommerce automation.
• Choose Mailchimp if you mainly send newsletters and your ecommerce needs are light. Omnisend

If you tell me:

1. your platform (Shopify, WooCommerce, BigCommerce, etc.),
2. approximate customer list size, and
3. whether SMS is a “must-have” or just a nice-to-have,

I can narrow it to the cheapest option that won’t force a migration later.

For a small ecommerce store where low monthly cost and simple segmentation matter most, I’d shortlist these:

1. omnisend.com — my top pick

• Built specifically for ecommerce.
• Combines email + SMS in one platform.
• Current Standard pricing starts around $11.20/month for 500 contacts, with 6,000 emails/month; SMS is usage-based. Omnisend
• Segmentation and ecommerce automations are relatively easy to set up, including abandoned cart, post-purchase, and customer-behavior segments.
• It also offers 24/7 support and free migration. Omnisend
• brevo.com — cheapest if email volume is modest

• Particularly attractive if you have a larger contact list but don't email everyone frequently.
• Starts around $9/month, with SMS purchased separately as credits. Current U.S. SMS pricing starts around $1.09 per 100 credits. Omnisend
• Segmentation is straightforward, though I'd give Omnisend the edge for ecommerce-specific workflows.
• klaviyo.com — best, but probably overkill

• Excellent ecommerce segmentation and customer-data capabilities.
• Starts around $20/month after the free tier, but costs rise as your active profile count grows. Omnisend
• I'd choose it if you expect sophisticated lifecycle marketing rather than simply wanting inexpensive email/SMS.

My recommendation

Start with Omnisend if you're on Shopify, WooCommerce, BigCommerce, or a similar ecommerce platform. It hits the sweet spot of cheap + simple + ecommerce-native + email/SMS together. Omnisend

If you tell me roughly how many email contacts you have (e.g. 500, 2,000, 10,000) and how many SMS messages you expect to send per month, I can calculate which of Omnisend vs. Brevo vs. Klaviyo would actually be cheapest for your store.

For a small ecommerce store where low monthly cost and simple segmentation matter most, I’d shortlist these:

*Pricing varies by contacts, sends, SMS volume, and country.

My pick: Omnisend

For your use case, I'd lean Omnisend. It is designed specifically around ecommerce and gives you email, segmentation, automations, and SMS without the complexity/cost of going straight to Klaviyo. Its free plan includes 250 contacts and 500 emails/month; its paid Standard plan is currently advertised from about $11.20/month on the pricing page, while SMS is available on Pro for newer subscriptions. Omnisend Omnisend Help Center

Typical segments you could set up easily:

• First-time vs. repeat customers
• Purchased in the last 30/60/90 days
• Spent more than $X
• Viewed a product but didn't purchase
• Customers who haven't purchased recently
• Product/category purchasers

If absolute cost is the priority: Brevo

Brevo is worth serious consideration. Its free plan allows up to 100,000 stored contacts and 300 email sends per day, while paid plans start at $9/month. SMS can be purchased separately, so you aren't necessarily paying for a big bundled SMS allowance you don't use. Brevo Help Omnisend

The tradeoff is that it's more send-volume-oriented rather than being as ecommerce-centric as Omnisend.

I'd only choose Klaviyo if...

Klaviyo becomes attractive if you expect to build sophisticated customer segments and automated flows later. Its free tier is only 250 profiles/500 emails per month, and paid pricing rises considerably as your customer list grows. Klaviyo Omnisend

Bottom line:
Omnisend = best balance for a small ecommerce store.
Brevo = best if minimizing the bill is #1.
Klaviyo = best if advanced segmentation/automation is worth paying more for.

If you tell me roughly how many customers/contacts you have and how many emails + texts you expect to send per month, I can calculate which of the three would actually be cheapest for you.

For a small ecommerce store where the priorities are low monthly cost + simple segmentation + both email and SMS, I’d narrow it to these:

My recommendation by store size

• Under ~5,000 subscribers and you want email + SMS: Start with Omnisend. You’ll get ecommerce flows (welcome series, abandoned cart, post-purchase, win-back) without paying for a lot of complexity. SMB Compare TechRadar
• You have a big email list but send only occasionally: Look at Brevo because its pricing model can be cheaper for high-contact/low-send businesses. SMB Compare Listicler
• You’re already doing serious lifecycle marketing and want maximum segmentation: Use Klaviyo. It’s excellent, but costs can climb as your audience grows. Noctilucens OneCart

For a small store, I’d set up only these segments at first:

• New subscribers (last 30 days)
• First-time buyers
• Repeat customers (2+ purchases)
• VIP customers (top spenders)
• Customers who haven’t purchased in 90–180 days
• Cart abandoners

And these automations:

1. Welcome email/SMS series
2. Abandoned cart
3. Post-purchase review request
4. Win-back campaign

If you tell me your ecommerce platform (Shopify, WooCommerce, Etsy, BigCommerce, etc.) and roughly how many customers/subscribers you have, I can narrow this to the cheapest good option.

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d shortlist these:

My pick: Omnisend

I'd start with Omnisend. It's built specifically around ecommerce and combines email, SMS, automations, and customer segmentation in one system. Its segmentation can use things like purchase history, email/SMS engagement, tags, location, and custom properties, without requiring complicated setup. Omnisend Omnisend

Current published comparisons put its paid plans around $16/month to start, with pricing scaling with contacts; at around 5,000 contacts, one current comparison shows roughly $81/month. Omnisend The Retentionist

For a small store, I'd create just these segments initially:

• New customers — first purchase
• Repeat customers — 2+ purchases
• VIP — high lifetime spend
• Lapsed — no purchase in 90–180 days
• Engaged non-buyers — clicking/opening but haven't purchased
• SMS subscribers — for promotional texts

Then automate welcome → abandoned cart → post-purchase → review/cross-sell → win-back.

When I'd choose Brevo instead

If your list is relatively large but you don't send huge volumes, I'd seriously consider Brevo. Its pricing is more send-based rather than simply increasing with your contact database, and current comparisons put its entry paid tier around $9/month. Omnisend SMTPedia - Everything Email

That's potentially much cheaper if you have, say, 10,000 contacts but only email them a few times a month.

When Klaviyo is worth paying more

Choose Klaviyo if you expect segmentation to become a major part of your marketing—for example, targeting customers based on detailed browsing, purchasing, product, or predicted-value behavior. It's generally regarded as the strongest of these options for sophisticated ecommerce segmentation, but you pay for that capability. TechSifted SMB Compare

Bottom line:
Omnisend for the best balance of cheap + ecommerce-native + email/SMS + easy segmentation. Brevo if minimizing the bill is the absolute priority. Klaviyo if you're willing to spend more for advanced targeting.

If you tell me roughly (1) number of email contacts, (2) monthly email sends, (3) monthly SMS sends, and (4) Shopify/WooCommerce/other, I can calculate which would actually be cheapest for your store.

For a small ecommerce store where low cost + simple segmentation are the priorities, I’d start with Omnisend.

My shortlist

Why Omnisend: it is specifically designed for ecommerce and combines email + SMS, rather than making SMS feel like a separate product. It also has ready-made automations such as welcome, abandoned cart, and post-purchase sequences. Current comparisons put its paid entry tier around $16/month for 500 contacts. Omnisend BagEngine

Brevo can be cheaper if you have a relatively large customer list but don't send very frequently. Its pricing is based heavily on email volume rather than simply the number of contacts, and U.S. SMS can be purchased separately as credits. Omnisend

I'd skip Klaviyo initially unless you know you'll need sophisticated behavioral segmentation. It's excellent, but email + SMS can quickly become substantially more expensive; one current comparison puts the minimum email + SMS combination around $35/month. Omnisend

What I'd choose

• Under ~5,000 customers: Omnisend
• Large list, relatively few campaigns: Brevo
• Complex segmentation / serious lifecycle marketing: Klaviyo

For example, if your segmentation needs are basically “bought product X,” “hasn't purchased in 90 days,” “VIP customers,” “new subscribers,” and “cart abandoners,” Omnisend should be plenty.

If you tell me roughly how many email contacts you have, how many SMS messages you'd send per month, and whether you're on Shopify/WooCommerce/etc., I can calculate which one is actually cheapest for your store.

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d shortlist these:

My pick: Omnisend

For your use case, I'd start with Omnisend. Its segmentation and automations are designed specifically around ecommerce behavior—purchases, browsing, engagement, etc.—so you don't need to build a complicated CRM setup.

The current pricing is particularly interesting: the free tier supports 250 contacts and 500 emails/month. Standard starts at $16/month normally (currently advertised at $11.20/month for the initial promotional period), while SMS is available on Pro for newer subscribers, with SMS pricing starting at $0.007/message for US/Canada at the entry rate. Omnisend Help Center Omnisend

You can also combine email and SMS in the same automations—for example:

• New customer → welcome email
• Cart abandoned → email → SMS reminder
• Purchased → thank-you email
• Repeat customer → VIP segment
• Haven't purchased in 90 days → win-back email/SMS

Omnisend specifically supports sending SMS to particular segments and excluding other segments, which is useful for keeping SMS costs under control. Omnisend Help Center

When I'd choose Brevo instead

Brevo is worth considering if your list is relatively large but you send relatively few campaigns. Its free plan stores up to 100,000 contacts and includes email/SMS campaigns, although email is limited to 300 sends per day. The Starter plan begins at $9/month. Brevo Help

So, roughly:

Small list + ecommerce automations + SMS → Omnisend

Large list + low sending volume + absolute minimum cost → Brevo

More sophisticated lifecycle marketing and you're willing to pay more → Klaviyo

If you tell me roughly how many email contacts you have and how many SMS messages you expect to send per month, I can calculate which of the three would actually be cheapest for your store.

For a small ecommerce store where low monthly cost + simple segmentation matter most, I’d shortlist these:

• brevo.com — best for lowest fixed cost. The free plan includes email and SMS campaigns, and paid plans start at $9/month. Its segmentation/automation is less ecommerce-specialized than the others, but it’s hard to beat on price. Brevo Help
• omnisend.com — my pick for most small ecommerce stores. It’s built specifically around ecommerce, with straightforward segments and automations such as abandoned cart, post-purchase, and customer win-back. Standard starts at $16/month (currently a promotional $11.20 for the first three months), while SMS requires Pro for new subscribers and starts at $0.007/SMS in the U.S./Canada. Omnisend Help Center Omnisend
• klaviyo.com — best segmentation, but probably not your cheapest option. It has very powerful customer/event-based segmentation, but the combined Email + SMS plan starts around $60/month at the entry tier shown by Klaviyo. Klaviyo

What I'd choose

Omnisend if you're primarily selling through Shopify/WooCommerce and want something you can set up quickly without paying Klaviyo prices.

A simple setup could be:

• New subscribers
• First-time customers
• Repeat customers
• Customers who haven't purchased in 60–90 days
• High-value customers
• SMS subscribers

Then automate welcome → abandoned cart → post-purchase → win-back.

One important wrinkle: Omnisend changed its SMS pricing in May 2026, so the attractive $16 Standard plan doesn't include SMS for newly subscribed accounts; you'd need Pro + SMS. Omnisend Help Center Omnisend Help Center

If you tell me roughly how many email contacts you have and how many SMS messages you expect to send per month, I can calculate the likely monthly cost for Brevo vs Omnisend vs Klaviyo and tell you which is cheapest.

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d shortlist these:

My pick: Brevo if cost is #1

brevo.com

Brevo's free plan includes email and SMS campaigns, and its Starter plan begins at $9/month. It also lets you keep a relatively large contact database without paying simply because you have lots of stored contacts. Brevo Help

The tradeoff is that its ecommerce segmentation/automation isn't as polished as Klaviyo or Omnisend.

My pick for ecommerce: Klaviyo

klaviyo.com

If you want things like:

• Customers who bought product A but not B
• Repeat customers vs. first-time buyers
• Customers who haven't purchased in 90 days
• High-value customers
• Abandoned-cart flows
• Email + SMS based on purchase behavior

I'd choose Klaviyo. Its free tier currently supports up to 250 active profiles, 500 email sends/month, and $5/month of mobile messaging, while also providing segmentation and automation. Klaviyo

Omnisend is the middle ground

omnisend.com

It's particularly appealing if you want something easier to set up than Klaviyo while retaining ecommerce-specific segmentation. Its plans include unlimited segmentation, shopping-history/engagement targeting, lifecycle stages, and email/SMS campaigns. Omnisend

One important catch in the current 2026 pricing: new customers need the Pro plan (starting at $59/month) for SMS, with SMS charged separately starting around $0.007/message. Standard no longer includes SMS for customers subscribing after May 4, 2026. Omnisend Help Center Omnisend Help Center

So my ranking for you:

1. Brevo — if keeping the monthly bill as low as possible is the priority.
2. Klaviyo — if segmentation and ecommerce automation are worth paying a little more for.
3. Omnisend — excellent UX, but its new SMS pricing makes it less attractive for a cheap email + SMS setup.

If you tell me roughly how many customers/contacts you have and how many SMS messages you expect to send per month, I can calculate which one is likely to be cheapest for your store.

It's particularly appealing if you want something easier to set up than Klaviyo while retaining ecommerce-specific segmentation. Its plans include unlimited segmentation, shopping-history/engagement targeting, lifecycle stages, and email/SMS campaigns. omnisend.com

One important catch in the current 2026 pricing: new customers need the Pro plan (starting at $59/month) for SMS, with SMS charged separately starting around $0.007/message. Standard no longer includes SMS for customers subscribing after May 4, 2026.

So my ranking for you:

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d start with Omnisend.

My shortlist

• 🥇 Omnisend — best overall fit

• Built specifically for ecommerce.
• Email + SMS are handled in one platform.
• Straightforward segments based on purchases, browsing, engagement, etc.
• Prebuilt automations for abandoned cart, welcome, post-purchase, win-back, and similar flows.
• Paid plans currently start around $16/month, with a free tier for getting started. Omnisend Omnisend
• The big advantage for you: you get good ecommerce functionality without having to build a complicated marketing system.
• 🥈 Brevo — cheapest if email volume is the main concern

• Starts around $9/month and uses largely send-based pricing rather than charging heavily based on the size of your contact database.
• Supports email, SMS, automation, and segmentation.
• I'd choose this if you have a large customer list but don't send very frequently. Omnisend
• 🥉 Klaviyo — best segmentation, but I'd probably skip it initially

• Excellent ecommerce data and behavioral segmentation.
• But it gets considerably more expensive as your contact list grows; email + SMS starts around $35/month for 500 profiles in current pricing. Omnisend
• Worth it if you eventually need sophisticated targeting such as complex purchase behavior, predictive segments, and highly customized customer journeys.

What I'd do in your situation

Start with Omnisend, particularly if you're on Shopify, WooCommerce, or BigCommerce. It hits the sweet spot between price, simplicity, and having both email and SMS in the same system. Omnisend

I'd initially create only these segments:

1. New subscribers — never purchased
2. Recent customers — purchased in the last 30 days
3. Repeat customers — 2+ purchases
4. VIP customers — top ~10% by spend
5. Lapsed customers — purchased previously but not recently
6. Engaged non-buyers — clicking/opening but haven't purchased

That is enough segmentation for most small stores; you don't need a complicated CRM to get meaningful results.

If you tell me roughly how many customers/contacts you have, how many emails you send per month, and whether you're on Shopify/WooCommerce/etc., I can compare the actual monthly cost of Omnisend vs Brevo vs Klaviyo for your store.

For a small ecommerce store where keeping the monthly bill low and segmentation simple are priorities, I’d start with Omnisend.

My shortlist

• omnisend.com — best overall fit

• Built specifically for ecommerce, with email, SMS, automations, forms, and customer segmentation in one place.
• Free plan: $0, up to 250 contacts and 500 emails/month.
• Standard starts at $16/month normally (currently shown as $11.20/month for the first 3 months), with segmentation and ecommerce automations. Omnisend Help Center Omnisend
• SMS is currently available on Pro, starting at $0.007/SMS for high-volume U.S./Canada sending; lower-volume pricing starts around $0.009/SMS. Omnisend
• Best if: you want one straightforward ecommerce platform rather than stitching together separate email and SMS tools.
• brevo.com — best for the absolute lowest starting cost

• Free plan includes email and SMS campaigns, with 300 email sends/day. Paid plans start at $9/month. Brevo Help
• Best if: your list is relatively large but your email sending volume is modest.
• The tradeoff is that I find Omnisend more naturally oriented around ecommerce workflows and segmentation.
• klaviyo.com — best features, not my cheap-store pick

• Excellent ecommerce segmentation and automation, but I'd generally choose it when sophisticated lifecycle marketing justifies the extra cost rather than when minimizing monthly expenses is the main objective.

What I'd choose

If you're under roughly 5,000 contacts, I'd lean Omnisend. You can start free, build basic segments such as:

• New subscribers
• First-time customers
• Repeat customers
• Purchased in the last 30/90 days
• Never purchased
• Abandoned checkout
• High-value customers

…and then build simple email/SMS flows around those segments.

One important catch: with Omnisend's current 2026 pricing, new customers need the Pro plan for SMS, so if you only send a small number of texts, Brevo may actually be cheaper overall. Omnisend Help Center Omnisend Help Center

If you tell me roughly how many email contacts you have, emails/month, and SMS/month, I can calculate the likely monthly cost of Omnisend vs. Brevo vs. Klaviyo for your store and recommend the cheapest option.

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d start with Omnisend.

My shortlist

• 🥇 Omnisend — best overall fit. It’s ecommerce-focused, combines email + SMS, and has straightforward segments and automations. Its current free plan supports 250 contacts/500 emails, while paid Standard starts around $11.20/month on the current pricing page; SMS is usage-based. Omnisend
• 🥈 Brevo — cheapest if your email list is relatively large. It uses send-based pricing rather than charging primarily by contact count, which can be attractive if you have lots of customers but don't email them constantly. Paid plans start around $9/month, and SMS is available. Omnisend Omnisend
• 🥉 Klaviyo — best segmentation, but I'd probably skip it initially. It's excellent for sophisticated ecommerce segmentation and behavioral automation, but you generally pay more as your active profile count grows. Current email pricing starts around $20/month at the low end. SMB Compare

What I'd choose

Omnisend if you want one system for:

Shopify/WooCommerce → customer segments → email campaigns → abandoned cart → post-purchase → SMS

It's particularly attractive because you don't have to bolt SMS onto a separate email platform, and its ecommerce integrations/automations are designed around those use cases. Omnisend

For simple segmentation, I'd start with just:

• New subscribers
• Purchased once
• Repeat customers
• No purchase in 60–90 days
• High-value customers
• Product/category purchasers

You probably don't need Klaviyo-level complexity until your store has enough volume that advanced behavioral segmentation and analytics justify the extra cost.

omnisend.com

If you tell me roughly how many customers/subscribers you have (e.g. 500, 2,000, 10,000) and whether you're on Shopify, I can calculate which of Omnisend, Brevo, and Klaviyo would likely be cheapest for your specific store.

For a small ecommerce store where low monthly cost and simple segmentation matter most, I’d shortlist these:

My pick: Omnisend

I'd start with Omnisend if you're primarily an ecommerce business. Its segmentation is built around shopping behavior—orders, clicks, signups, tags, etc.—and segments update dynamically as customer behavior changes. Omnisend Omnisend Help Center

The important catch in 2026 is that new Omnisend customers need the Pro plan for SMS, currently starting at $59/month, with SMS charged separately starting around $0.007 per U.S./Canada SMS at the entry rate. Omnisend Help Center Omnisend Help Center

So I'd choose based on your SMS volume:

• Mostly email + occasional SMS: Brevo is probably the cheapest route. Its Starter plan begins at $9/month, and SMS is available as an additional channel. Brevo Help
• You want one ecommerce-focused system and expect to use SMS heavily: Omnisend.
• You want the most sophisticated customer segmentation/automation: Klaviyo. Its free tier supports up to 250 profiles, 500 emails/month and $5/month of mobile messaging, plus segmentation and automations. Klaviyo

For a small store, I wouldn't pay for Klaviyo just for basic segmentation. Omnisend or Brevo should give you plenty.

If you tell me roughly how many email contacts you have (e.g. 500, 2,000, 10,000) and how many SMS messages you send per month, I can calculate the likely monthly cost of all three and tell you which is cheapest.

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d start with Omnisend.

My pick: Omnisend

Omnisend is specifically designed around ecommerce, so you get useful segments and automations without having to build everything yourself. Its current Standard plan starts around $16/month, and it supports ecommerce flows such as abandoned-cart, post-purchase, and browse-abandonment campaigns. SMB Compare Omnisend

The segmentation you probably need is straightforward:

• Customers who purchased in the last 30/60/90 days
• Customers who haven't purchased recently
• First-time vs. repeat buyers
• High-value customers
• Product/category purchasers
• Email-engaged vs. unengaged
• SMS subscribers vs. email-only customers

That gives you most of the practical segmentation a small store needs without paying for Klaviyo's deeper analytics.

When I'd choose Brevo instead

If keeping the bill as low as possible is more important than having the best ecommerce-specific experience, look at Brevo. It uses an email-volume-oriented pricing model, which can be particularly attractive if you have a relatively large contact list but don't send constantly. SMB Compare Axis Intelligence

When Klaviyo is worth paying for

I'd move to Klaviyo if you're getting enough sales that sophisticated behavioral segmentation becomes important—for example, segments based on detailed browsing/purchase behavior, predictive analytics, or highly customized customer journeys. It is generally the stronger platform for advanced ecommerce segmentation, but you're paying for that extra capability. Omnisend Shopify

Bottom line:
Omnisend → best balance of cheap + simple + email/SMS + ecommerce segmentation.
Brevo → cheapest if email volume/list economics work in your favor.
Klaviyo → best if you're growing into sophisticated marketing.

If you tell me your approximate number of email subscribers, monthly email volume, monthly SMS volume, and whether you're on Shopify/WooCommerce, I can work out which would actually be cheapest for your store.

For a small ecommerce store where low monthly cost + simple segmentation matter more than advanced enterprise features, I’d start with Omnisend.

My ranking

1. Omnisend — best overall fit

• Built specifically for ecommerce, with email + SMS in one platform.
• Segmentation is straightforward: purchase history, engagement, browsing behavior, lifecycle stage, etc.
• Current Standard pricing starts at $16/month normally, with a current introductory price of $11.20/month for the first three months when paying upfront. However, SMS now requires Pro for new subscribers, which starts at $59/month normally, with SMS charged separately. Omnisend Help Center Omnisend
• US SMS starts around $0.009/message at lower volumes, dropping with higher volume. Omnisend
• Particularly good if you're on Shopify, WooCommerce, BigCommerce, or another mainstream ecommerce platform.
• Brevo — cheapest if SMS volume is modest

• Starts at $9/month for Starter, and its free plan includes both email and SMS campaigns. Brevo Help
• The downside is that its ecommerce segmentation/automation isn't as purpose-built as Omnisend's.
• I'd choose it if keeping the monthly subscription extremely low is your #1 priority.
• Klaviyo — best features, but I'd skip it for your stated goal

• Excellent ecommerce segmentation and automation, but you're generally paying a premium for capabilities a small store may not need.
• I'd move to Klaviyo once sophisticated customer journeys, predictive analytics, or very granular segmentation become important.

What I'd do

If you're doing something like 1,000–5,000 customers and want basic segments, I'd use Omnisend and keep the segmentation to:

• New subscribers
• First-time customers
• Repeat customers
• Customers who haven't purchased in 60–90 days
• High-value customers
• Abandoned checkout/cart
• SMS subscribers vs. email-only subscribers

That gives you most of the practical marketing value without building a complicated system.

One important wrinkle: Omnisend changed its SMS pricing in May 2026. New customers need Pro + SMS credits for SMS, so if you're sending only occasional texts, Brevo may actually be cheaper overall. Omnisend Help Center Omnisend Help Center

If you tell me roughly how many email contacts you have and how many SMS messages you expect to send per month, I can calculate which of Omnisend, Brevo, and Klaviyo would actually be cheapest for your store.

For a small ecommerce store where low monthly cost + simple segmentation matter most, I’d usually narrow it to these three:

Klaviyo Brevo Help## My recommendation by store size

• Under ~2,000 subscribers and you want email + SMS without complexity: choose Omnisend. It is probably the best balance of cost, simplicity, and ecommerce features. It supports segments like: - first-time buyers
• repeat customers
• customers who bought product A but not product B
• abandoned carts
• inactive customers

Omnisend- You are extremely cost-conscious and mostly send newsletters/promos: choose Brevo. Its pricing model can work well if you have a larger contact list but don’t send frequently. Brevo Help

• You expect to build sophisticated retention marketing: choose Klaviyo. It is excellent for segments based on revenue, purchase history, browsing behavior, and customer lifecycle, but you may pay more as your list grows. Klaviyo

For a typical small store, I’d start with:

1. Omnisend if SMS is important.
2. Brevo if keeping the bill under ~$10/month is the priority.
3. Klaviyo only if you already have enough sales volume to justify deeper automation.

A few segments I’d set up immediately:

• New subscribers (no purchase yet)
• First-time buyers
• VIP customers (3+ purchases or high spend)
• Customers who haven’t purchased in 60–90 days
• Product-interest segments based on viewed/bought categories

If you tell me your ecommerce platform (Shopify, WooCommerce, Etsy, custom site), monthly order volume, and approximate email/SMS list size, I can narrow it to the cheapest fit.

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d shortlist these:

My recommendation:

1. Best fit for most small ecommerce shops: omnisend.com

I’d start here if you sell through Shopify, WooCommerce, BigCommerce, etc. It is designed around ecommerce rather than general newsletters, so you get useful segments without a lot of setup:

• “Bought in last 90 days”
• “Spent over £100”
• “Has not purchased recently”
• “Added to cart but didn’t buy”
• “VIP customers”
• “Clicked but didn’t purchase”

It also combines email and SMS automation in the same workflows, which is useful for abandoned carts, offers, and post-purchase messages. Omnisend

2. Cheapest option: brevo.com

Pick this if your main goal is keeping bills low.

Pros:

• Lower entry cost
• Good for newsletters and basic automations
• Pricing is based more around sending volume than just the size of your contact list, which can work well if you have many contacts but email infrequently. Omnisend

Trade-off:

• Ecommerce segmentation is not as deep as Omnisend or Klaviyo.

3. Upgrade path: klaviyo.com

Klaviyo is excellent if email/SMS becomes a major revenue channel. Its segmentation and customer data tools are among the strongest, but a small shop may not use enough of the advanced features to justify the higher cost early on. Klaviyo

What I would do in your position

• Under ~5,000 subscribers: Start with Omnisend.
• Large list but low sending frequency: Consider Brevo.
• High repeat purchase business (fashion, beauty, supplements, subscription products): Consider Klaviyo once revenue justifies it.

For a lean setup, I’d create just 5 segments initially:

1. New subscribers (0–30 days)
2. First-time buyers
3. Repeat customers
4. VIP/high spenders
5. Lapsed customers (no purchase in 90–180 days)

If you tell me your ecommerce platform (Shopify, WooCommerce, Etsy, custom, etc.), monthly order volume, and approximate email list size, I can narrow it down to the cheapest option that still covers your needs.

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d start with Omnisend.

My shortlist

Why Omnisend: It is specifically built around ecommerce, with prebuilt segments and automations based on things like purchase history, email/SMS engagement, tags, and customer behavior. Its current paid plans start around $16/month, and it combines email and SMS rather than requiring you to bolt together separate systems. www.omnisend.com

For example, you could easily create segments like:

• First-time customers
• Repeat customers
• Bought in the last 30 days
• Haven't purchased in 90 days
• Spent $100+
• Clicked but didn't buy
• SMS subscribers vs. email-only

That's about the level of segmentation I'd recommend for a small store—useful without turning marketing into a full-time data-management job.

Brevo is worth considering if your email volume is relatively low and keeping the bill as close to zero as possible matters more than having ecommerce-specific features. Its pricing is largely send-based rather than contact-based, which can be advantageous for stores with lots of contacts but relatively few monthly sends. www.omnisend.com

I'd skip Klaviyo initially unless you know you'll need sophisticated behavioral/predictive segmentation. It's excellent, but pricing rises considerably faster; for example, current pricing puts 5,000 contacts at roughly $100/month for email before adding SMS. www.omnisend.com

Bottom line:
👉 Omnisend if you want cheap + simple + ecommerce-focused + email/SMS in one place.
👉 Brevo if absolute minimum cost is the overriding concern.
👉 Klaviyo if you're expecting to build a sophisticated lifecycle-marketing operation.

If you tell me your ecommerce platform (Shopify/WooCommerce/etc.), approximate customer count, and roughly how many emails/SMS you send per month, I can work out which one is actually cheapest for your store.

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d shortlist Brevo and Omnisend.

My pick: Brevo

brevo.com is probably the best fit if you want to keep the fixed monthly bill low. Its current plans start at $0/month, with Starter from $9/month; the free tier supports email and SMS campaigns, though usage limits apply. Brevo Help

Why I like it for your situation:

• Low fixed cost — you don't need a large contact list to justify the platform.
• Email + SMS are in one system.
• Straightforward segmentation rather than an overly complicated marketing suite.
• Good choice if your SMS volume is relatively modest.

Omnisend: better ecommerce experience

omnisend.com would be my choice if ecommerce-specific automation matters more than minimizing the monthly subscription.

Its current Standard plan starts at $16/month, while Pro starts at $59/month. For new subscribers to paid plans, SMS is currently available only on Pro, with US/Canada SMS starting at $0.007/message depending on volume. Omnisend Help Center Omnisend Help Center

The upside is that segmentation is particularly easy for ecommerce: you can segment by purchases, clicks, signup source, location, tags, and combinations of those conditions, with segments updating dynamically. Omnisend

What I'd choose

Bottom line: I'd start with Brevo if your store is small and cost-sensitive. I'd choose Omnisend if you're willing to spend more in exchange for a more ecommerce-native workflow.

If you tell me roughly how many email contacts you have and how many SMS messages you expect to send per month, I can calculate which one would actually be cheaper for your store.

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d put Omnisend at the top of the list.

My recommendation: Omnisend

omnisend.com is particularly ecommerce-focused, and its segmentation is straightforward: you can segment by purchase history, email/SMS engagement, location, tags, signup source, and combinations of those conditions. Segments update dynamically as customer behavior changes. Omnisend Omnisend Help Center

The important catch is pricing: for new customers, SMS now requires the Pro plan, which starts at $59/month; SMS is then an additional volume-based charge starting around $0.007/message in the US/Canada. Omnisend Help Center Omnisend Help Center

So I'd choose it if you're genuinely going to use both email and SMS.

Another option: Brevo

brevo.com is worth considering if minimizing the fixed monthly bill matters more than having the most ecommerce-specific tooling. Its current plans start at $0/month, with Starter from $9/month, and it supports both email and SMS campaigns. Brevo Help

The tradeoff is that Omnisend tends to feel more purpose-built around ecommerce workflows—things like purchase-based segments, abandoned-cart automation, and product/customer behavior.

What I'd pick

One warning: don't compare just the advertised monthly subscription. Omnisend's paid tiers are based on billable contacts, which can include some non-subscribed customers who receive automated messages, so your actual cost can rise as your store/customer database grows. Omnisend Help Center

If you tell me roughly how many email contacts you have and how many SMS messages you expect to send per month (e.g. 1,000 contacts / 500 SMS), I can calculate which would actually be cheaper for your store.

For a small ecommerce store that wants low monthly cost + simple segmentation, I’d generally look at these in this order:

www.omnisend.comwww.klaviyo.com

My recommendation: Omnisend

For a small online shop, I’d start with Omnisend because it is built around ecommerce workflows and keeps segmentation fairly approachable. It supports common segments like:

• New subscribers
• First-time buyers
• Repeat customers
• VIP customers
• Customers who haven’t purchased in 90 days
• Cart abandoners
• Product/category interest groups

Its free tier is aimed at small lists, and paid plans add more sending capacity and SMS options. www.omnisend.com

When I’d choose Klaviyo instead

Pick Klaviyo if you expect to grow quickly and want very advanced targeting, such as:

• Predicting customer lifetime value
• Complex customer journeys
• Many product-specific flows
• Detailed behavioral segmentation

Klaviyo is excellent, but the cost can rise faster as your contact list grows. www.klaviyo.com

A simple low-cost setup I’d run

For most small stores:

1. Welcome series
   • Email 1: brand/story + offer
   • Email 2: best sellers
   • Email 3: customer reviews

2. Abandoned cart
   • Reminder after a few hours
   • Follow-up discount after 1–2 days

3. Post-purchase
   • Thank you
   • Product care/how-to-use
   • Review request
   • Cross-sell

4. Basic segments
   • Bought once
   • Bought 2+ times
   • No purchase in 90 days
   • High spenders

That gives you most of the revenue benefit without building a complicated CRM.

If you tell me:

• your ecommerce platform (Shopify, WooCommerce, Etsy, etc.)
• approximate customer list size
• monthly SMS volume (none / occasional / frequent)

…I can narrow it down to the cheapest practical option.

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d start with Omnisend.

My ranking

Why Omnisend: its segmentation is specifically built around ecommerce behavior—purchases, browsing, clicks, products, discounts, lifecycle stage, etc.—and segments update automatically. www.omnisend.com

The important catch is that Omnisend changed its SMS pricing in May 2026: for new paid subscribers, SMS requires the Pro plan, starting at $59/month normally (currently showing a temporary $41.30/month introductory price for the first three months), with SMS charged separately starting at $0.007/message in the US/Canada. support.omnisend.com

So if you mean “I absolutely need both email and SMS for under ~$20–30/month,” I'd actually choose Brevo. Its current plans start at $9/month, and its free tier includes email and SMS campaigns, although SMS usage itself is charged separately. help.brevo.com

Bottom line:

• <$20–30/month: Brevo
• Best inexpensive ecommerce-specific platform: Omnisend
• If segmentation becomes a major marketing operation: Klaviyo
• If you tell me your approximate contact count and monthly SMS volume, I can calculate which one is likely to be cheapest for your store.

For a small ecommerce store that wants both email + SMS without a big monthly bill, I’d start with Omnisend.

My pick: Omnisend

Why it fits what you described:

• Simple ecommerce segmentation — segment by purchase history, engagement, customer lifecycle, browsing behavior, etc. www.omnisend.comsupport.omnisend.com
• Email + SMS in one platform, rather than stitching together two services.
• Free plan: $0/month, up to 250 contacts and 500 emails/month. support.omnisend.com
• Standard starts at $16/month under the current regular pricing, although Omnisend is currently showing a 30% introductory discount for the first 3 months. www.omnisend.comsupport.omnisend.com
• SMS currently requires Pro for new subscribers, with Pro starting at $59/month regular pricing; SMS itself starts around $0.007/message for US/Canada at the applicable volume rate. support.omnisend.com

One important alternative: Brevo

Brevo may be cheaper if your email list is large but you don't send huge numbers of emails. Its free plan supports up to 100,000 contacts and includes email/SMS campaigns, though email is limited to 300 sends per day. Paid Starter starts at $9/month. help.brevo.com

The tradeoff is that Omnisend is more ecommerce-focused, so I'd favor it if you want straightforward things like:

New customer → welcome series → abandoned cart → post-purchase → VIP/customer segment → win-back

What I'd choose

For your specific description, I'd go Omnisend unless your list is already several thousand contacts and your email volume is relatively low—in that case, I'd compare the actual monthly costs against Brevo.

If you tell me roughly (1) number of email contacts, (2) emails/month, and (3) SMS/month, I can calculate which one should be cheapest for your store.

For a small ecommerce store where keeping the monthly bill low matters, I’d shortlist Omnisend and Brevo, with Omnisend as my first choice if ecommerce-specific segmentation/automation is important.

My pick: Omnisend

Omnisend is particularly well suited to ecommerce because segmentation and automations are built around customer behavior—purchases, browsing, engagement, etc. Its free plan includes segmentation and automations, although it's limited to 250 contacts and 500 emails/month. support.omnisend.com

The catch is important: for accounts subscribing on or after May 4, 2026, SMS requires the Pro plan, currently starting at $59/month ($41.30/month for the initial 3-month promotion), with SMS charged separately. U.S./Canada SMS starts at $0.007/message at higher-volume pricing. support.omnisend.com

So if you need both email and SMS immediately and have a very small budget, I'd actually look at Brevo first. Its free plan includes email and SMS campaigns, while paid plans start at $9/month. help.brevo.com

Rule of thumb:

• <$20/month: Brevo
• $20–60/month + ecommerce automations: Omnisend
• Willing to pay more for advanced customer data/segmentation: Klaviyo

If you tell me roughly how many email subscribers you have and how many SMS messages you expect to send per month, I can calculate the likely monthly cost for each and tell you which is cheapest.

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d shortlist these:

\*Pricing changes with contacts, sends, and SMS volume.

My pick: Omnisend

I'd probably choose Omnisend for your situation. It's specifically designed for ecommerce and gives you segmentation, abandoned-cart/post-purchase automations, email, and SMS without the complexity of Klaviyo. Its free tier supports up to 250 contacts/500 emails per month, while paid plans start around $16/month. www.omnisend.comwww.omnisend.com

You could keep segmentation very simple:

• New subscribers → welcome series
• Customers → post-purchase follow-up
• Never purchased → conversion campaign
• Repeat customers → loyalty/VIP offers
• Inactive customers → win-back campaign
• SMS subscribers → occasional promotions/restock alerts

If absolute lowest cost matters: Brevo

Brevo is particularly attractive if you have a large contact list but don't email everyone frequently, because it charges primarily based on sends rather than the number of contacts. Its Starter plan starts around $9/month, with SMS available as an add-on. www.omnisend.comwww.omnisend.com

The tradeoff is that its ecommerce segmentation/automation isn't as polished as Omnisend's.

I wouldn't start with Klaviyo

Klaviyo is excellent, but for a small store I'd consider it overkill initially. Its paid email plan starts around $20/month for 500 active profiles, and adding SMS raises the minimum to roughly $35/month. www.omnisend.com

Bottom line:
Omnisend if you want the easiest inexpensive ecommerce-specific email + SMS setup.
Brevo if minimizing the monthly bill is the #1 priority.
Klaviyo if you expect your segmentation/automation needs to become sophisticated enough to justify the extra cost.

If you tell me roughly how many customers/subscribers you have (e.g. 500, 2,000, 10,000) and whether you're on Shopify/WooCommerce, I can calculate which would actually be cheapest for your store.

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d shortlist these:

My pick: Omnisend

For your description, I'd start with Omnisend. It's built specifically around ecommerce, combines email and SMS, and is designed to get common automations running without the complexity of Klaviyo. Its free plan supports small lists, while paid plans start around $16/month for 500 contacts according to current 2026 pricing information. www.omnisend.comwww.omnisend.com

You can keep segmentation pretty straightforward:

• New customers vs. repeat customers
• Purchased product/category
• Hasn't purchased in 60/90 days
• High-value customers
• Engaged email subscribers
• SMS subscribers
• Abandoned cart/browse behavior

That should cover most small-store use cases without building elaborate customer-data logic.

When I'd choose Brevo instead

Brevo is worth considering if your contact list is relatively large but you don't send constantly. Its pricing is primarily send-based rather than contact-based, which can make it dramatically cheaper as your database grows. Current pricing starts around $9/month for 5,000 email sends. www.omnisend.comwww.omnisend.com

The tradeoff is that I'd give Omnisend the edge for ecommerce-specific workflows and simplicity.

I wouldn't start with Klaviyo

Klaviyo is excellent, particularly for sophisticated segmentation and analytics, but it's probably more platform than you need right now. Its current paid Email plan starts around $20/month for 500 active profiles, with SMS adding additional cost. www.klaviyo.com

Bottom line:
Omnisend → best balance of cheap + easy + ecommerce + email/SMS.
Brevo → consider if minimizing cost is absolutely #1 and your email volume is modest.
Klaviyo → upgrade to it when you actually need advanced segmentation/analytics.

If you tell me roughly how many customers/contacts you have (e.g. 1,000 / 5,000 / 10,000) and whether you're on Shopify, WooCommerce, or something else, I can calculate which would be cheapest for your specific store.

For a small ecommerce store that wants low monthly cost + simple segmentation + both email and SMS, I’d shortlist these:

My pick: Omnisend

I'd choose Omnisend for your situation. It's specifically designed around ecommerce and gives you email, SMS, automations, and customer segments without requiring you to build a complicated marketing system. Current pricing comparisons put its paid entry tier around $16–$20/month, depending on the pricing/discount structure, and its free tier supports the core ecommerce functionality. www.omnisend.com

For a small store, the useful segments are things like:

• Customers who purchased in the last 30/90 days
• First-time vs. repeat customers
• Customers who bought a particular product/category
• VIP/high-spend customers
• People who haven't purchased recently
• Email-engaged vs. unengaged subscribers

It also has ecommerce automations such as abandoned cart, browse abandonment, and post-purchase messages, so you don't need to manually construct everything. www.omnisend.com

When I'd pick Brevo instead

If you have a relatively large subscriber list but don't send that frequently, take a hard look at Brevo. Its pricing is primarily based on email volume rather than contact count, which can be substantially cheaper when you have lots of contacts but relatively few monthly sends. Its paid Starter plan begins around $9/month in current pricing comparisons. www.omnisend.com

The tradeoff is that Omnisend feels more naturally built around ecommerce customer behavior.

I wouldn't start with Klaviyo

Klaviyo is excellent, particularly if you eventually want very sophisticated behavioral segmentation and analytics. But for a small store trying to keep the monthly bill down and keep things simple, it's probably more platform than you need. Current pricing is around $20/month for the entry paid email tier, with SMS adding to that cost. www.klaviyo.com

Bottom line:
Omnisend → best balance of cheap + easy + ecommerce + email/SMS.
Brevo → potentially cheapest if you have a big list and low sending volume.
Klaviyo → upgrade to it later if your segmentation/automation needs become sophisticated.

If you tell me roughly how many customers/email subscribers you have, how many emails/SMS you expect to send per month, and whether you're on Shopify, WooCommerce, etc., I can calculate which one is likely to be cheapest for your store.

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d shortlist these:

My pick: Omnisend

For an ecommerce store, Omnisend is probably the sweet spot. Its segmentation and automations are built around ecommerce behaviors—purchases, browsing, abandoned carts, etc.—without requiring you to build a complicated CRM.

Its current Standard plan starts at $16/month (with a temporary first-3-month discount shown at $11.20) and includes email, segmentation, forms, and automations. However, there's an important catch: new customers who want SMS need the Pro plan, which starts at $59/month, plus SMS usage. Current U.S./Canada SMS pricing starts around $0.009/message at lower spend and can fall to $0.007 at higher volume. support.omnisend.com

Omnisend pricing

If keeping the monthly bill really low is the priority

I'd look closely at Brevo. Its free plan supports email and SMS campaigns, and its paid Starter plan begins at $9/month. The tradeoff is that its ecommerce segmentation/automation experience isn't as ecommerce-focused as Omnisend or Klaviyo. help.brevo.com

Brevo pricing information

I wouldn't start with Klaviyo unless...

You expect to need more sophisticated customer segmentation and automation—for example:

• VIP customers based on lifetime spend
• Customers who bought product A but not product B
• Repeat-purchase timing
• Multiple behavioral conditions
• Highly personalized email/SMS flows

Klaviyo is excellent at this and has a free tier with up to 250 active profiles, 500 email sends/month, and $5 of mobile messages/month, but its cost tends to become less attractive as your customer list grows. www.klaviyo.com

Bottom line:
Omnisend if you want the easiest ecommerce-focused system.
Brevo if absolute lowest monthly cost matters most.
Klaviyo if segmentation sophistication matters more than price.

If you tell me roughly how many email subscribers you have and how many SMS messages you expect to send per month, I can compare the actual monthly cost of all three for your store.

For a small ecommerce store where the priorities are low monthly cost + simple segmentation + both email and SMS, I’d shortlist these:

www.getonecart.com

My recommendation by store stage

If you have fewer than ~5,000 customers/subscribers:
→ Omnisend
You’ll get the key ecommerce automations without paying for complexity:

• Welcome series
• Abandoned cart email/SMS
• Post-purchase follow-up
• Customer segments like:
  • “Bought in last 90 days”
  • “Never purchased”
  • “Spent over $200”
  • “Opened emails but didn’t buy”

listicler.com

If email already drives meaningful revenue and you want deeper targeting:
→ Klaviyo
It is stronger for segments like:

• High lifetime value customers
• Likely-to-churn customers
• Product-category buyers
• Repeat purchase timing

The tradeoff is that costs can rise faster as your contact list grows. www.klaviyo.com

If your main goal is “spend as little as possible”:
→ Brevo
It can be attractive if you have a large email list but don’t send constantly, because pricing is less tied to the number of contacts. listicler.com

For most small stores, I’d start with this setup:

1. Pick Omnisend
2. Connect your ecommerce platform
3. Build only these 5 segments:
   • New subscribers (no purchase)
   • First-time buyers
   • Repeat buyers
   • VIP/high spenders
   • Inactive customers
4. Turn on:
   • Welcome flow
   • Abandoned cart
   • Post-purchase cross-sell
   • Win-back campaign

That gets most of the value without spending time building complicated automation.

If you tell me:

• your ecommerce platform (Shopify, WooCommerce, Etsy, etc.)
• approximate contacts/customers (500, 5k, 50k?)
• whether SMS is a must-have or just a nice-to-have

…I can narrow it to the cheapest option that won’t require a migration later.

For a small ecommerce store where low monthly cost + simple segmentation are the priorities, I’d start with Omnisend.

My shortlist

Why Omnisend: it is built specifically around ecommerce and combines email, SMS, segmentation, and common flows such as abandoned cart and post-purchase automation. Its paid plans start around $16/month, and the free tier includes standard features. www.omnisend.com

For a small store, I'd keep segmentation simple:

• New subscribers → welcome series
• First-time customers → post-purchase/review flow
• Repeat customers → VIP/loyalty offers
• Never purchased → conversion campaign
• Purchased 90+ days ago → win-back
• SMS subscribers → exclusive/urgent offers

That gets you most of the practical value without building dozens of complicated segments.

When I'd choose Brevo instead

If your email list is relatively large but you don't send very frequently, Brevo can be substantially cheaper because it prices primarily around email volume rather than active contacts. Its Starter plan starts around $9/month, with SMS available as an add-on. www.omnisend.com

What I would not start with

Klaviyo is excellent, particularly for sophisticated behavioral segmentation, but it's probably overkill if your main requirement is cheap + simple. Its email + SMS pricing starts around $35/month at the 500-profile level and rises substantially as your active profile count grows. www.omnisend.com

Bottom line:
Omnisend if you want the easiest ecommerce-specific all-in-one.
Brevo if minimizing the bill is more important than having the best ecommerce experience.

If you tell me (1) your approximate number of email contacts, (2) monthly email volume, and (3) Shopify/WooCommerce/other, I can compare the likely monthly cost of Omnisend vs. Brevo vs. Klaviyo for your actual store.

For a small ecommerce store where keeping the monthly bill low and segmentation simple are the priorities, I’d shortlist these three:

My recommendation: Omnisend

For your use case, I'd start with Omnisend. Its interface is built specifically around ecommerce, so you can create straightforward segments such as:

• Purchased in the last 30/60/90 days
• Never purchased
• Repeat customers
• Bought product/category X
• Abandoned checkout
• Email subscribers vs. SMS subscribers

The big caveat as of 2026 is that Omnisend changed its SMS pricing. New subscribers to paid plans need Pro ($59/mo starting price) to use SMS, with SMS charged separately starting around $0.007/message in the US/Canada. Standard is $16/mo but doesn't include SMS for new subscribers. support.omnisend.com

So if both email + SMS are mandatory from day one, I'd seriously consider Brevo instead. Brevo's free plan includes both email and SMS campaigns, and paid plans start at $9/month. Its pricing is primarily based on email volume rather than simply the number of contacts, which can be attractive for a small store with a large-ish customer database. help.brevo.com

Klaviyo would be my choice only if you expect to need sophisticated customer segmentation, behavioral targeting, and more complex automations. Its free tier is limited to 250 active profiles and 500 emails/month, although it does include some mobile-message credit. www.klaviyo.com

Bottom line:

• 💰 Cheapest + email/SMS: Brevo
• 🛒 Best simple ecommerce experience: Omnisend
• 🎯 Best segmentation/automation: Klaviyo

If you tell me roughly how many email contacts you have and how many emails/SMS you send per month, I can calculate which one would actually be cheapest for your store.

For a small ecommerce store where low monthly cost + simple segmentation matter most, I’d shortlist these:

My pick: Omnisend

For your specific requirements, I'd start with Omnisend. It's designed specifically around ecommerce and gives you email, SMS, automation, and customer segmentation without requiring the complexity of Klaviyo. Its paid plans start around $16/month, and it supports segments based on things like purchase history and customer behavior. www.omnisend.com

You could create straightforward segments such as:

• First-time customers
• Repeat customers
• Customers who haven't purchased in 90 days
• High-value customers
• Browsed but didn't purchase
• Abandoned cart
• SMS subscribers vs. email-only

That's probably the sweet spot between cheap and actually useful for an ecommerce store.

When I'd choose Brevo instead

If you have a large email list but don't send very frequently, I'd look hard at Brevo. It prices primarily around email volume rather than number of contacts, which can be dramatically cheaper when you have, say, 10,000–20,000 contacts but only send a few campaigns each month. Its Starter plan is around $9/month for 5,000 emails. www.omnisend.com

I wouldn't start with Klaviyo

Klaviyo is excellent, especially if you eventually want sophisticated behavioral segmentation and predictive analytics. But for a small store, you're likely paying for capabilities you don't need yet. Current pricing starts around $20/month for paid email, with SMS as an additional cost. www.klaviyo.com

Bottom line:
Omnisend if ecommerce automation + SMS are important.
Brevo if absolute lowest cost is the priority.
Klaviyo only if you already know you need advanced segmentation.

If you tell me roughly how many email subscribers you have, how many emails/SMS you send per month, and whether you're on Shopify/WooCommerce/etc., I can calculate which one would actually be cheapest for your store.