ChatGPT answers, unedited

For a boutique store with under 500 contacts, I’d look at:

• brevo.com — Best free all-rounder for a small shop. It offers campaign analytics (opens/clicks) and contact segmentation with filters like engagement and customer data. Brevo
• klaviyo.com — Best if ecommerce analytics matter most (sales attribution, customer segments, purchase behavior), but its free tier is limited to about 250 active profiles, so you may outgrow it quickly. Klaviyo
• mailchimp.com — Easiest for beginners; good basic audience segmentation and reporting, but ecommerce-focused analytics are less deep than Klaviyo. Zapier

For a boutique selling products online, I’d start with Klaviyo if you have ≤250 active customers and want purchase-based segments; otherwise Brevo is likely the better free fit under 500 contacts. Klaviyo Brevo

Useful segments to create:

• Repeat buyers
• One-time buyers
• No purchase in 90+ days
• High-value customers
• Interested in specific product categories
• Newsletter-only subscribers

For a boutique ecommerce store with under 500 contacts, I’d look at these three:

What I'd choose for your use case

Brevo is worth considering if your priority is staying free as your contact list grows. Its free plan doesn't cap stored contacts and allows 300 emails/day, while its paid tiers add more sophisticated segmentation based on demographics, website activity, campaign engagement, and custom events. Brevo

Mailchimp is a straightforward choice if you're genuinely going to stay below 500 contacts and want an ecommerce-oriented email marketing workflow. But because you're already close to its free contact ceiling, you'll need to watch your list size. Mailchimp HubSpot Blog

HubSpot makes more sense if by "segmentation" you also mean CRM-style customer management—customer records, interactions, and sales information—rather than primarily ecommerce email marketing. HubSpot Blog

One important distinction: if by ecommerce analytics you mean things like revenue per campaign, purchase history, abandoned carts, repeat-purchase behavior, and RFM/customer-value segmentation, the answer changes. Those features are considerably more ecommerce-specific than ordinary email open/click analytics.

If you tell me whether your store is Shopify, WooCommerce, Etsy, Squarespace, or something else, I can narrow this to the best free option for your exact setup.

For a boutique store with under 500 contacts, I’d shortlist these:

My recommendation: Brevo

brevo.com

Brevo's free plan gives you up to 100,000 stored contacts, basic segmentation and reporting, and 300 email sends per day. Brevo Help Brevo Help

However, if by “ecommerce analytics” you specifically mean revenue per campaign, products purchased, customer purchase behavior, etc., I'd lean toward Klaviyo or Mailchimp. Mailchimp's free tier includes ecommerce data/reporting, although its free plan is capped at 500 contacts and 1,000 emails/month according to recent comparisons. HubSpot Blog

For a boutique, I'd choose:

1. 🥇 Klaviyo — if Shopify/ecommerce data + customer segmentation are the main priority.
2. 🥈 Brevo — if you want the most generous free plan and simple segmentation.
3. 🥉 Mailchimp — if you want straightforward ecommerce reporting and don't expect to exceed 500 contacts soon.

If you tell me whether your store is Shopify, WooCommerce, Squarespace, or something else, I can narrow it down to the best actually-free option for your setup.

brevo.com

Brevo's free plan gives you up to 100,000 stored contacts, basic segmentation and reporting, and 300 email sends per day.

For a boutique store with under 500 contacts, I’d pick Brevo if your priority is ecommerce/customer marketing + basic segmentation without paying.

• Brevo — Best overall free option. Its free plan supports up to 100,000 contacts, includes basic reporting/analytics, contact segmentation, and automation for up to 2,000 contacts. The catch is 300 email sends/day, and more advanced analytics are paid. Brevo Help Brevo Help Brevo Help
• HubSpot — Best if you want a stronger CRM. The free CRM supports up to 1,000 contacts and includes list segmentation, contact activity, and reporting. However, it's more CRM-oriented than ecommerce-marketing-oriented. HubSpot Legal HubSpot
• Mailchimp — I wouldn't choose it for you. Its current free plan is only 250 contacts and 500 sends/month, so you'd outgrow it with a 500-contact list. Mailchimp

My recommendation

Brevo → best fit if you want to track things like campaign performance, customer engagement, and create segments such as:

• Repeat customers
• Never purchased
• Purchased in the last 30/90 days
• High-value customers
• Product/category interests
• Engaged vs. inactive subscribers

If by “ecommerce analytics” you specifically mean revenue per customer, purchase history, average order value, product performance, and customer cohorts, tell me what ecommerce platform you use (Shopify, WooCommerce, Square, etc.). I can narrow it down to the best genuinely free setup for your store.

For a boutique store with under 500 contacts, I’d pick brevo.com as the strongest free option right now.

Brevo's free plan is particularly attractive because it doesn't charge based on contact count and gives you 300 email sends per day. Brevo Help Brevo Help

For your specific use case

I'd choose Brevo if you want to track things like:

• customers vs. prospects
• recent purchasers
• customers who haven't purchased recently
• campaign engagement
• basic behavioral/transactional segments
• ecommerce/customer activity

One caveat: Brevo's more advanced segmentation is on paid plans, so the free tier is better described as basic-to-moderate segmentation rather than Klaviyo-level customer analytics. Brevo

If your store is on Shopify or WooCommerce and by “ecommerce analytics” you mean product-level revenue attribution, abandoned carts, repeat-purchase analysis, RFM/VIP segments, etc., I'd actually look harder at Klaviyo or Omnisend rather than choosing purely on the free contact limit.

Bottom line: For <500 contacts and $0/month, start with Brevo. If your priority is deep ecommerce analytics rather than general email marketing, tell me whether you're on Shopify, WooCommerce, Square, or something else, and I can narrow it to the best free option.

For a boutique store with under 500 contacts, I’d pick Brevo as the best free option right now.

Best fit: Brevo

Brevo

• Free: up to 100,000 stored contacts
• Email: 300 sends/day
• Analytics: basic campaign reporting and analytics
• Segmentation: contact lists/attributes and basic segmentation
• Automation: available, with up to 2,000 contacts entering active automations
• No time limit on the free plan. help.brevo.comhelp.brevo.com

The big advantage for you is that Brevo doesn't make 500 contacts a problem. Its free tier is based much more on email volume than contact count.

One important caveat

If by "ecommerce analytics" you mean revenue per campaign, products purchased, customer lifetime value, abandoned-cart behavior, etc., the answer depends heavily on your store platform (Shopify, WooCommerce, Squarespace, etc.). Brevo's free plan gives basic analytics, while more advanced reporting is paid. help.brevo.comhelp.brevo.com

I wouldn't choose Mailchimp for your situation: its current free tier is only 250 contacts and 500 emails/month, so you'd outgrow it immediately if you're close to 500 contacts. mailchimp.com

My ranking for your use case:

1. 🥇 Brevo — best overall free choice
2. Shopify Email — potentially better if you're already on Shopify and mainly want store-linked ecommerce data
3. MailerLite — worth considering if email design/marketing is more important than ecommerce analytics
4. Mailchimp — not attractive at your list size

If you tell me what ecommerce platform you use (Shopify, WooCommerce, Squarespace, etc.), I can narrow this down to the best free option specifically for your store.

For a boutique store with under 500 contacts, I’d pick Brevo.

Best fit: Brevo

brevo.com

• Free plan: $0, with up to 100,000 stored contacts. Brevo Help Brevo Help
• Basic analytics: campaign reporting and basic statistics are included. Brevo Help
• Segmentation: you can segment based on contact data, email engagement, website activity, and e-commerce activity such as orders and cart activity. Brevo Help Brevo Help
• Main catch: the free plan is limited to 300 email sends per day, so a 500-person list would require splitting a campaign across days. Brevo Help

Runner-up: Mailchimp

mailchimp.com

Mailchimp's free plan is now only 250 contacts / 500 sends per month, so it doesn't really fit your "under 500" requirement unless your list stays below 250. Its free segmentation supports up to 10 conditions, and e-commerce purchase activity can be used for segmentation when your store is connected. Mailchimp Mailchimp Mailchimp

Bottom line: If you have, say, 300–500 customers and want free e-commerce analytics + basic customer segments, Brevo is the clear choice. If you tell me whether your store runs on Shopify, WooCommerce, Squarespace, or something else, I can also recommend the best free setup for tracking sales, repeat customers, abandoned carts, and customer segments.

For a boutique store with under 500 contacts, I’d shortlist these:

• brevo.com — best overall free option. Its free tier supports unlimited contacts, up to 300 emails/day, basic CRM, campaign analytics, and segmentation/automation. It’s particularly attractive if your list will grow beyond 500. TechRadar TechSifted
• hubspot.com — best for customer/ecommerce analytics. The free CRM supports up to 1,000 contacts, contact segmentation, reporting, and integrations. It’s more CRM-oriented than ecommerce-marketing-oriented. HubSpot HubSpot
• mailchimp.com — easiest for simple email marketing. But its free tier has become much more restrictive in 2026, with sources reporting a 250-contact/500-email limit, so I wouldn't choose it if you're close to 500 contacts. TechRadar SMTPedia - Everything Email

My pick

Brevo if you want free + segmentation + room to grow.
HubSpot if your priority is customer data and analytics rather than sophisticated ecommerce email campaigns.

If you tell me whether your store is on Shopify, WooCommerce, Squarespace, or something else, I can give you the best free choice specifically for your setup.

For a boutique store with under 500 contacts, I’d pick Brevo if you want the best free combination of ecommerce/customer data, analytics, and basic segmentation.

My picks

• 🥇 Brevo — best overall free choice. The free plan supports up to 100,000 stored contacts and 300 email sends/day, plus campaigns, transactional email, and customer-management features. Brevo Help Brevo Help

• Good for segments like new customers, repeat buyers, inactive customers, VIPs
• Better value if your list grows beyond 500
• Main drawback: 300 sends/day can be restrictive for a large campaign
• 🥈 Mailchimp — easiest if you want simple ecommerce reporting. Its free tier has historically been aimed at very small lists, with basic reporting, segmentation, and ecommerce integrations, but its free limits have become tighter in 2026. HubSpot Blog

• Very beginner-friendly
• Good templates and integrations
• Less attractive if you expect your contact list to grow
• 🥉 Klaviyo — best ecommerce analytics, but not really the best free option. It's much stronger for things like purchase behavior, abandoned carts, customer lifetime value, and behavioral segments, but its free tier is only around 250 contacts. SMTPedia - Everything Email

What I'd choose for your store

Start with Brevo if your priority is $0 + basic segmentation + useful customer analytics. You won't have to migrate just because your list goes from 500 to 1,000 contacts.

If by “ecommerce analytics” you specifically mean revenue per campaign, repeat-purchase behavior, abandoned carts, customer lifetime value, and product-level reporting, I'd lean toward Klaviyo instead—even though you'll hit its free-tier limit sooner.

If you tell me whether your store runs on Shopify, WooCommerce, Square, Wix, or something else, I can narrow this down to the best free option for your exact setup.

For a boutique ecommerce store with under 500 contacts, I’d pick Brevo Free as the best overall fit.

🏆 My recommendation: Brevo

Brevo's free plan currently allows up to 100,000 stored contacts and 300 emails/day, so having 400–500 contacts doesn't force you into a paid tier. Brevo Help Brevo Help

More importantly for you, its segmentation can use ecommerce behavior—for example:

• Customers who purchased a particular product
• Customers who haven't purchased recently
• Customers who placed multiple orders
• Customers who abandoned a cart
• Contacts based on email engagement
• Website activity

Brevo explicitly supports ecommerce conditions such as orders, products, order amounts, and cart activity. Brevo Help

The tradeoff is that the free plan gives you basic statistics, rather than Brevo's more advanced reporting/analytics. Brevo Help

If ecommerce analytics are your #1 priority

I'd look at Klaviyo instead—but its free tier is only around 250 active profiles, so you'd likely outgrow it with 500 contacts. Klaviyo is particularly strong for revenue attribution and ecommerce-specific analytics. HubSpot Blog

Bottom line:
Brevo Free → best combination of free contact capacity + ecommerce segmentation + basic analytics.
If you tell me whether your store is on Shopify, WooCommerce, Squarespace, or something else, I can narrow it down to the best free option for your exact setup. Brevo Help

For a boutique store with under 500 contacts, I’d look at platforms that combine customer purchase data + email analytics + simple segments rather than just newsletter tools.

Here are the strongest free options:

My recommendation for a boutique store

Pick Klaviyo if:

• You sell through Shopify, WooCommerce, or another ecommerce platform.
• You want to know “who bought what,” “who hasn’t purchased recently,” and “who clicked but didn’t buy.”
• You plan to send product launches, abandoned-cart emails, or VIP offers.

Klaviyo’s free tier includes reporting and basic segmentation, but the free limit is 250 active profiles, so a list close to 500 contacts may require a paid plan. Klaviyo

Pick Brevo if:

• You have closer to 500 contacts and mainly want newsletters, basic customer groups, and affordable scaling.
• Your priority is keeping more contacts stored without immediately paying. Brevo

Pick Mailchimp if:

• You mainly send announcements, promotions, and occasional newsletters.
• You don’t need deep purchase-based segmentation yet. G2 Learn Hub

For a boutique retailer, I’d usually start with:

1. Klaviyo → if ecommerce sales tracking matters.
2. Brevo → if keeping costs at $0 while managing a larger list matters.
3. Mailchimp → if simplicity matters more than ecommerce intelligence.

Useful segments to create right away:

• New subscribers (last 30 days)
• First-time buyers
• Repeat customers
• VIP/high-spend customers
• Customers who haven’t purchased in 90–180 days
• Product-category buyers (e.g., dresses, accessories, skincare)

If you tell me what platform you sell on (Shopify, Etsy, Square, WooCommerce, in-store POS, etc.), I can narrow it down.

For a boutique store with under 500 contacts, I’d look at these:

• Best overall free option: brevo.com — Free plan stores up to 100,000 contacts and allows 300 email sends/day. It includes contact management and segmentation, making it particularly attractive if your list may grow. Brevo Help Brevo Help
• Best if you're on Shopify: shopify.com — Convenient because your ecommerce/customer data stays inside Shopify. Shopify specifically positions it for email campaigns, segmentation, and tracking.
• Best for richer ecommerce analytics: mailchimp.com — Its Shopify integration can use purchase/customer events for segmentation and track attributed revenue. However, the free tier has become quite restrictive; current information indicates 250 contacts/500 sends, so you may already exceed the free limit if you have close to 500 contacts. Shopify App Store Mailchimp
• Klaviyo is excellent for ecommerce analytics and behavioral segmentation, but its free tier is only 250 contacts, so I wouldn't choose it for a 300–500 contact list unless you're willing to pay. Shopify

My pick

If your priority is $0 + basic segmentation + useful customer analytics, I'd start with Brevo.

If you're already using Shopify, I'd first try Shopify Email because there's less setup and your store data is already there.

If you tell me whether you're on Shopify, WooCommerce, Squarespace, or something else, I can narrow it down to the best free option for your store and compare exactly what analytics/segments you get.

For a boutique ecommerce store with under 500 contacts, I’d shortlist these:

• brevo.com — best overall free option. Its current free plan supports up to 100,000 contacts and 300 emails/day, plus customer/contact management and campaign reporting. It’s particularly attractive if you want to segment based on customer behavior as you grow. Brevo Help Brevo
• mailchimp.com — easiest mainstream choice. It offers ecommerce integrations, reports, CRM/contact management, and basic segmentation. The catch is that its free offering is much more restrictive, and current pricing/free-plan details have changed over time, so I wouldn't pick it purely for the free tier. Shopify App Store Shopify
• shopify.com — worth considering if you're already on Shopify. It keeps ecommerce data inside Shopify and is convenient for tracking campaigns and targeting customers without adding another platform. Shopify

My pick

Brevo if your priority is free + segmentation + room to grow. With only ~500 contacts, its contact allowance is effectively a non-issue, and the 300/day sending limit is plenty for a small boutique.

For segmentation, I'd start with:

• First-time vs. repeat buyers
• High-value customers
• Customers who haven't purchased in 90/180 days
• Product/category purchasers
• Engaged vs. unengaged subscribers

If you tell me what ecommerce platform you use (Shopify, WooCommerce, Squarespace, etc.), I can give you the best 2–3 free options specifically for that platform, including what analytics and segmentation each actually gives you for free.

For a boutique store with under 500 contacts, I’d look for a platform that combines customer profiles + purchase tracking + simple segments rather than a pure analytics dashboard. Good free options:

My shortlist for a boutique store:

1. Best overall: Omnisend

• Good if you sell through Shopify, WooCommerce, or another ecommerce platform.
• Easy segments like: - “Bought in the last 90 days”
• “VIP customers”
• “Never purchased”
• “Viewed but didn’t buy”
• Strong fit for a small retail brand. TechRadar
• Best if you want deeper customer analytics: Klaviyo

• Better when you want to understand customer lifetime value, repeat buyers, and revenue generated by campaigns.
• You may outgrow the free tier sooner as your contact list grows. G2 Learn Hub
• Best if you mainly need dashboards: Triple Whale

• Useful for seeing overall ecommerce performance, but pair it with an email/CRM tool for segmentation. Triple Whale

For a boutique with fewer than 500 contacts, I’d probably start with Omnisend if your goal is repeat purchases and targeted campaigns, or Klaviyo if your goal is learning more about customer behavior and building sophisticated segments. TechRadar G2 Learn Hub

If you tell me what platform your store runs on (Shopify, WooCommerce, Etsy, Square, etc.) and whether you want email/SMS marketing or just analytics, I can narrow it down.

For a boutique store with under 500 contacts, I’d shortlist these:

Brevo's free plan is particularly attractive: it costs $0, supports up to 100,000 stored contacts, and allows 300 email sends/day. Brevo Help Brevo Help

My recommendation

Start with Brevo Free if your priority is zero cost + customer segmentation + useful store/email analytics. You could segment customers into groups like:

• First-time vs. repeat buyers
• Purchased in the last 30/60/90 days
• High-value customers
• Product/category purchasers
• Engaged vs. inactive contacts

If by “ecommerce analytics” you specifically mean revenue attribution, abandoned-cart behavior, product-level customer behavior, and purchase-based flows, I'd lean toward Klaviyo—but its free tier is currently limited to 250 active profiles. G2 Learning Hub

Bottom line: Brevo for the best genuinely free all-around setup; Klaviyo if ecommerce analytics is more important than staying entirely within the free tier.

If you tell me whether your store is Shopify, WooCommerce, Wix, Squarespace, or something else, I can narrow it down to the best free option for your exact setup.

For a boutique ecommerce store with under 500 contacts, I’d pick Brevo first.

Brevo's free plan is particularly attractive because it isn't constrained by a small contact count; current comparisons report unlimited contacts and 300 emails/day, with segmentation and ecommerce capabilities available. EmailTooltester.com Toolradar

If your store runs on Shopify, I'd consider Klaviyo instead if you care about things like who bought what, repeat purchasers, high-value customers, abandoned carts, and purchase-based segments. It's more ecommerce-native, although its free tier is considerably more limited. SMTPedia - Everything Email

I would not choose Mailchimp purely because you have 500 contacts. Its current pricing/free-tier situation has changed substantially, and its stronger ecommerce automation/reporting features sit behind paid tiers. Mailchimp

Bottom line:

• 💰 Best free: Brevo
• 🛍️ Best ecommerce analytics: Klaviyo
• 🧑‍💻 Simplest beginner experience: Mailchimp
• 🗂️ Best if you also need a CRM: HubSpot

If you tell me whether you're on Shopify, WooCommerce, Squarespace, or another platform, I can narrow this down to the best free choice for your exact store.

If your store runs on Shopify, I'd consider Klaviyo instead if you care about things like who bought what, repeat purchasers, high-value customers, abandoned carts, and purchase-based segments. It's more ecommerce-native, although its free tier is considerably more limited. smtpedia.com

I would not choose Mailchimp purely because you have 500 contacts. Its current pricing/free-tier situation has changed substantially, and its stronger ecommerce automation/reporting features sit behind paid tiers.

Bottom line:

If you have under 500 contacts and want ecommerce analytics + basic segmentation without paying, I’d shortlist these:

My recommendation

If your store is on Shopify: choose Shopify Email if you mainly need straightforward campaign reporting, customer groups, and basic ecommerce marketing. Shopify's current free offering is particularly generous for small stores. Shopify

If ecommerce analytics and segmentation are the priority: choose Klaviyo. Its free tier currently includes built-in reporting, basic customer segmentation, revenue attribution, and ecommerce integrations—but the catch is that the free tier is only 250 active profiles and 500 emails/month. Klaviyo

If you have 251–500 contacts right now, I'd lean Brevo. Its free plan allows up to 100,000 stored contacts and 300 email sends/day, so you won't immediately hit a contact-count paywall. Brevo Help Brevo Help

So, in one line:

Shopify store → Shopify Email for simplicity; serious ecommerce insights → Klaviyo; 300–500 contacts → Brevo.

If you tell me whether you're using Shopify, WooCommerce, Etsy, or another platform, I can narrow it to the best actually-free option for your store.

For a boutique ecommerce store with under 500 contacts, I’d pick HubSpot Free if your priority is analytics + basic segmentation, rather than just email sending.

HubSpot's current free tools support contact segmentation and reporting, and the free CRM allows up to 1,000 contacts. HubSpot HubSpot

My recommendation

🥇 HubSpot Free — best if you want to understand who your customers are and segment them by things like:

• First-time vs. repeat customers
• Product/customer type
• Email engagement
• Form submissions
• Customer properties

For a small boutique, that gives you a useful foundation without immediately paying for a marketing platform. HubSpot specifically supports segmentation based on contact properties, email activity, and form submissions. HubSpot

🥈 Brevo Free — choose this if your main priority is email marketing volume. Its free tier allows a very large contact database and 300 emails/day, but its free segmentation/analytics are less compelling for a data-heavy ecommerce setup. accelrio.com

I wouldn't choose Mailchimp for this use case anymore: its current free tier is only 250 contacts and 500 sends/month, so you'd outgrow it quickly. mailchimp.com

If by “ecommerce analytics” you mean revenue by campaign, purchase history, abandoned carts, repeat-purchase rate, product-level customer segments, tell me what ecommerce platform you use (Shopify, WooCommerce, Squarespace, etc.), and I can narrow it down to the best genuinely free option.

For a boutique store with fewer than 500 contacts, I’d focus on platforms that combine customer segmentation + ecommerce revenue tracking, not just email sending. The best free options depend on your store setup:

My picks:

1. If you use Shopify → start with Klaviyo.

It is the closest match to “I have a small customer list but want to understand buyers.” You can create segments like:

• First-time customers
• Repeat buyers
• High-spend customers
• Customers who haven’t purchased in 90 days
• People who viewed products but didn’t buy
• If you want something simpler → Mailchimp.

Good if you mostly send launches, promotions, and newsletters. It’s easier to learn but less focused on ecommerce behavior. OneCart

3. If your store is heavily ecommerce-driven (Shopify/WooCommerce) → Omnisend is worth testing.

It’s built around flows like abandoned cart, welcome series, and post-purchase messaging. TechRadar

For a boutique under 500 contacts, I would avoid overbuilding. A useful starter setup is:

• Segment 1: VIP customers (top spenders)
• Segment 2: Recent buyers (last 30–60 days)
• Segment 3: Lapsed buyers (90+ days)
• Segment 4: Prospects/newsletter subscribers

If you tell me what your store runs on (Shopify, WooCommerce, Etsy, Squarespace, in-store POS, etc.), I can narrow this to the best free choice.

For a boutique store with under 500 contacts, I’d pick Brevo.

• brevo.com — best overall free option. Its free plan allows up to 100,000 stored contacts, includes basic reporting/analytics, and supports segmentation based on attributes and behavior. The main catch is 300 email sends/day. Brevo Help Brevo Help
• mailchimp.com — less attractive now. Its current free tier is limited to 250 contacts and 500 sends/month, so you'd exceed the free contact limit if your list is anywhere from 251–500. Mailchimp

My recommendation

Brevo if your priority is:

• Ecommerce/customer analytics
• Basic customer segmentation
• Email marketing
• Room to grow beyond 500 contacts
• Staying genuinely free

For example, you could create segments like “purchased in last 30 days,” “no purchase in 90 days,” “high-value customers,” or “bought category X.”

One caveat: if by “ecommerce analytics” you mean deep product/revenue analytics directly tied to your Shopify/WooCommerce store, the answer can change depending on your ecommerce platform. If you tell me whether you use Shopify, WooCommerce, Square, Wix, or something else, I can recommend the best free stack for your store.

For a boutique store with under 500 contacts, I’d pick Brevo.

Why Brevo

Brevo's free plan lets you store up to 100,000 contacts, gives you basic statistics/reporting, and supports marketing automation for up to 2,000 contacts. The main catch is 300 email sends per day. Brevo Help Brevo Help

For your use case, that means you can segment customers into things like:

• New subscribers
• Past purchasers
• Repeat customers
• High-value customers
• Customers who haven't purchased recently
• Product/category interests

If by "ecommerce analytics" you mean revenue, orders, and sales attributed to campaigns, I'd verify the exact capabilities of your store integration before committing—the free Brevo tier is explicitly limited to basic reporting, with more advanced analytics on paid tiers. Brevo Help

MailerLite is the other one I'd consider, especially if you have fewer than 250 active contacts. Its free plan now caps active subscribers at 250, but includes dynamic segments, tags/groups, automations, and ecommerce integrations with sales-tracking capabilities. MailerLite MailerLite

Bottom line: If you're somewhere between 250–500 contacts, choose Brevo. If you're under 250 and prioritize a simpler email-marketing interface, MailerLite is worth considering.

For a boutique store with under 500 contacts, I’d pick Brevo if you want to stay free.

• Brevo — best overall free option. Its free plan allows up to 300 emails/day, and you can store a large number of contacts. It also supports contact segmentation and basic campaign analytics. Brevo EmailTooltester.com
• Mailchimp — good ecommerce reporting, but the free tier is now restrictive. Its current free plan is limited to 250 contacts and 500 sends/month, so it doesn't really fit if you're anywhere near 500 contacts. Mailchimp Mailchimp
• Klaviyo — excellent for ecommerce, especially Shopify stores, but I wouldn't choose it if your priority is free + simple. Its value becomes more compelling once you need sophisticated purchase-based segmentation and automated flows.

My pick

Brevo if your priorities are:

<500 contacts → $0 → basic analytics → simple segments → room to grow.

One caveat: Brevo's free tier is capped by daily sending volume, so if you want to blast 500+ contacts simultaneously, that's something to consider. Brevo

If you tell me whether your store is Shopify, WooCommerce, Squarespace, or something else, I can narrow it down to the best free option specifically for your ecommerce setup.

For a boutique store with under 500 contacts, I’d look at platforms that combine customer data + ecommerce reporting + simple segments rather than a generic email tool.

Here are the strongest free (or nearly free) options:

My pick for a boutique ecommerce store:

• If you use Shopify, WooCommerce, or another ecommerce platform → start with Klaviyo. It is built around customer purchase behavior, so you can create useful segments like:
  • “Bought once, no purchase in 90 days”
  • “VIP customers”
  • “Clicked jewelry emails but never purchased”
  • “New customers from last 30 days”

It also includes reporting tied to campaigns and revenue. www.klaviyo.com

• If you have 300–500 contacts and mainly need newsletters + simple grouping → Brevo may be more comfortable because its model can be friendlier for small lists that send frequently. www.brevo.com

One thing to watch: Klaviyo’s free tier caps at 250 active profiles, so a 500-contact list may require a paid plan depending on how many contacts are marketable. www.klaviyo.com

For a boutique store, I’d usually set up these first 5 segments:

1. New customers (last 30 days)
2. Repeat buyers (2+ orders)
3. VIP/high spenders
4. Never purchased subscribers
5. Inactive customers (no purchase/click in 90–180 days)

If you tell me your ecommerce platform (Shopify, Etsy, WooCommerce, Square, etc.) and whether you need email only or SMS too, I can narrow it down.

For a boutique store with under 500 contacts, I’d shortlist these:

Brevo is particularly attractive because its free plan isn't constrained by contact count, and it supports contact segmentation; its paid tiers add deeper ecommerce/event tracking and analytics. www.brevo.com

HubSpot's free plan is also generous for a small store—up to 2,000 contacts and 2,000 emails/month, with CRM, reporting, and basic automation. blog.hubspot.com

My pick: Brevo if you primarily want customer segmentation + email/ecommerce basics without paying. HubSpot if you want to build a fuller customer database/CRM around the store.

One caveat: if by “ecommerce analytics” you mean revenue by customer, repeat-purchase behavior, abandoned carts, product performance, and RFM-style segments, I'd look specifically at the Shopify/WooCommerce integration and the exact free-tier limits before choosing.

For a boutique store with under 500 contacts, I’d focus on platforms that combine customer segmentation + ecommerce reporting rather than just email blasts. The best free options depend on your store platform (Shopify, WooCommerce, etc.), but these are strong fits:

My recommendation for a boutique store

1. If you use Shopify: start with Klaviyo. It is probably the best match because you can segment customers by: - first-time vs repeat buyers
2. high spenders
3. customers who haven’t purchased recently
4. product categories purchased
5. email engagement

OneCart1. If you want something easier and less marketing-heavy: use Mailchimp. It’s simpler for occasional campaigns like: - new arrivals

• seasonal sales
• VIP customer emails

OneCart1. If your main goal is ecommerce automation: consider Omnisend, especially if you want flows like abandoned cart, welcome series, and post-purchase follow-ups. TechRadar

For a boutique under 500 contacts, I’d avoid overbuilding. A simple setup with:

• VIP customers
• recent buyers (last 90 days)
• inactive customers (90+ days)
• interested in product category X

will usually give you most of the value.

If you tell me what you sell on (Shopify, Etsy, WooCommerce, Squarespace, in-store POS, etc.), I can narrow it to the best free choice.

For a boutique ecommerce store, Klaviyo is the best fit if you have ≤250 contacts: its free plan includes built-in reporting, revenue attribution, basic customer segmentation, and ecommerce-oriented analytics. The catch is the 250 active-profile limit and 500 email sends/month. www.klaviyo.com 

If you have 250–500 contacts, I'd choose Brevo instead. Its free tier allows up to 300 emails/day and is much more generous on contact storage; however, some of the more useful ecommerce/event tracking and advanced segmentation features are on paid tiers. www.brevo.com

Mailchimp's current free plan is only 250 contacts / 500 sends per month, so it doesn't really solve your under-500 requirement. mailchimp.com

My recommendation:

• <250 contacts: Klaviyo
• 250–500 contacts: Brevo
• If your priority is specifically “who bought what, revenue per campaign, repeat customers, high-value customers”, I'd lean Klaviyo and accept the 250-contact ceiling.

Klaviyo
Brevo
Mailchimp 

For a boutique store with under 500 contacts, I’d pick Brevo.

Best fit: Brevo

• Free plan: $0, with up to 100,000 stored contacts. help.brevo.comhelp.brevo.com
• Analytics: basic campaign statistics and reporting are included. help.brevo.comhelp.brevo.com
• Segmentation: you can create dynamic segments using contact attributes, email behavior, and e-commerce activity. help.brevo.com
• Automation: free plan supports up to 2,000 unique contacts entering automations, so you're well within the limit. help.brevo.com
• Main catch: you're limited to 300 email sends/day and Brevo branding remains on free emails. help.brevo.comhelp.brevo.com

Why I wouldn't choose Mailchimp

Mailchimp's current free tier is only 250 contacts, so you'd outgrow it immediately if your list is anywhere near 500. mailchimp.com Its free tier does have basic segmentation, including e-commerce activity when connected to an ecommerce platform, but you'd need a paid plan once you're over 250 contacts. mailchimp.com

My recommendation: Start with Brevo Free. For a small boutique, it gives you the best combination of zero cost + ecommerce-aware segmentation + basic analytics.

If you tell me whether you're on Shopify, WooCommerce, Squarespace, or another store platform, I can also tell you which free option gives you the best actual Shopify/store revenue analytics, not just email analytics.

For a boutique store with under 500 contacts, I’d focus on platforms that combine customer segmentation + purchase analytics rather than a generic email tool. A few good free options:

My pick for your size:

1. If you sell through Shopify/WooCommerce: start with Omnisend or Fidras. They’re closer to what a boutique usually needs: “who bought what, who hasn’t returned, who are my VIP customers, who should get a promotion?” www.fidras.comwww.techradar.com
2. If you mainly want dashboards and revenue insights: use Triple Whale alongside your existing email tool. www.triplewhale.com
3. If you care about customer lifetime value and cohorts: try Datadrew’s free tier. datadrew.io

For under 500 contacts, I’d avoid paying for enterprise segmentation tools; many are designed for tens of thousands of customers. apps.shopify.com

If you tell me your storefront platform (Shopify, Etsy, WooCommerce, Squarespace, Square POS, etc.) and whether you need email marketing or just analytics, I can narrow it to the best fit.

For a boutique store with under 500 contacts, I’d pick Brevo if “free” is the priority, and Omnisend if ecommerce-specific analytics/segmentation is the priority.

My recommendation: Brevo

Brevo's free plan gives you basic reporting/analytics, segmentation/automation, and up to 100,000 stored contacts. The catch is the 300-email-per-day sending limit and basic rather than advanced analytics. help.brevo.com

If you have, say, 400 contacts and mainly want to track opens/clicks, group customers into segments, and send occasional campaigns, it's probably the best zero-cost choice.

If you want deeper ecommerce data: Omnisend

Omnisend is much more tailored to stores. Its segmentation can use purchase history, products viewed, carts, orders, engagement, and customer profile data, and segmentation is available on the free plan. support.omnisend.com

However, there's a significant catch: free only lets you send to 250 contacts per campaign and 500 emails/month. So with 251–500 contacts, you'd need the paid Standard plan to reach your whole list. support.omnisend.com

Bottom line:

• Want genuinely free + under 500 contacts → Brevo
• Want the best ecommerce segmentation/analytics → Omnisend
• If your list is closer to 500 and you email everyone regularly → Brevo is considerably more practical on free.

If you tell me whether your store is Shopify, WooCommerce, Wix, Squarespace, or something else, I can narrow it down to the best 2–3 free options for your exact setup.

For a boutique ecommerce store with under 500 contacts, I’d pick Brevo.

Brevo's free plan currently supports up to 100,000 contacts, 300 email sends/day, contact management, and segmentation based on attributes and activity. help.brevo.com

Why I'd choose it for you: you can create segments such as first-time buyers, repeat customers, haven't purchased in 90 days, or high-value customers without immediately paying just because your list approaches 500. For deeper on-site tracking and event-based segmentation, Brevo puts more of those capabilities on its paid Standard tier. www.brevo.com

I wouldn't choose Mailchimp specifically for this use case: its current free plan is only 250 contacts and 500 sends/month, so a store with 400–500 contacts would already be over the free limit. mailchimp.com

Bottom line: Brevo = best free starting point if you want ecommerce/customer analytics + segmentation and expect your list to grow.

For a boutique store with under 500 contacts, I’d shortlist these:

My pick: Brevo. Its free plan is genuinely ongoing, supports up to 100,000 contacts, and allows 300 email sends per day. It also includes basic automation and ecommerce capabilities, making it a strong fit if you're below 500 contacts today but expect the list to grow. help.brevo.com

If by “ecommerce analytics” you specifically mean revenue by campaign, abandoned-cart behavior, product/customer purchase segments, repeat-purchase analysis, etc., then Klaviyo is substantially better. Its free tier is restrictive, though, so you may hit the ceiling quickly. blog.hubspot.com

One important 2026 wrinkle: Mailchimp's free offering is no longer the obvious choice for a 500-contact store. Current sources report a much tighter free tier, while its paid Essentials plan starts around $13/month at 500 contacts. mailchimp.com

Bottom line:

• 💰 Best free + room to grow: Brevo
• 🛍️ Best ecommerce analytics: Klaviyo
• 👥 Best CRM/customer management: HubSpot
• ✉️ Simplest familiar option: Mailchimp

If you tell me whether your store is Shopify, WooCommerce, Squarespace, or something else, I can narrow it down to the best free option specifically for your setup.

For a boutique ecommerce store with under 500 contacts, I’d shortlist these:

Brevo is particularly attractive if your list is close to 500 because its free plan is based primarily on sending volume rather than contact count. toolradar.com

If you're on Shopify, I'd also consider Shopify Email for the simplest setup; it offers substantial free sending capacity, but it's less of a standalone customer-segmentation/analytics platform. www.drip.com

My recommendation

Pick Brevo if you want $0 + basic segmentation + customer/marketing analytics without immediately hitting a 250-contact ceiling.

Pick Klaviyo if your priority is deep ecommerce analytics—purchase behavior, customer cohorts, RFM-style targeting, etc.—and you can keep the active profile count under 250 or don't mind paying.

One important 2026 change: Mailchimp's free tier was reduced to 250 contacts, so older recommendations saying "Mailchimp is free up to 500" are now outdated. toolradar.com

If you tell me whether you're on Shopify, WooCommerce, Etsy, or another platform, I can give you the best 2–3 free options specifically for your store, including exactly what analytics and segmentation each free tier gives you.

For a boutique ecommerce store with under 500 contacts, I’d pick Klaviyo if your priority is ecommerce analytics + basic customer segmentation.

Why Klaviyo: its free tier includes campaign performance metrics, revenue attribution, customer segmentation, and ecommerce activity data. The catch is that the free tier is currently limited to 250 active profiles, so if you're closer to 500 contacts, you'd need to pay. www.klaviyo.com

Brevo is worth considering if "free" is the absolute priority. Its pricing model is more send-based, so it's particularly attractive when you have a relatively large contact list but don't email constantly. www.brevo.com

My recommendation:

• ≤250 contacts + Shopify/WooCommerce: Klaviyo
• 251–500 contacts and must stay $0: Brevo
• Want the simplest all-around email marketing tool: Mailchimp

If you tell me whether you're on Shopify, WooCommerce, Square, Wix, or another platform, I can narrow this down to the best actually-free option for your store.

For a boutique ecommerce store with under 500 contacts, I’d pick Brevo.

Why Brevo: Its free plan currently allows up to 100,000 stored contacts, includes basic reporting/analytics, and supports segmentation based on purchase history and ecommerce activity. You also get 300 email sends/day. help.brevo.com

Brevo

Klaviyo is arguably better if your priority is sophisticated ecommerce analytics—its free tier includes revenue attribution, campaign performance, dashboards, and basic customer segmentation—but the free tier is limited to 250 active profiles and 500 emails/month, so it doesn't fit a 400–500-contact store. www.klaviyo.com

Klaviyo

Mailchimp is also limited to 250 contacts on free, despite having useful segmentation based on ecommerce activity. mailchimp.com

Mailchimp

Bottom line: If you have 300–500 contacts and want $0/month, go with Brevo. If you're willing to pay later and want the deepest ecommerce/customer analytics, Klaviyo is the stronger long-term option.

For a boutique store with fewer than 500 contacts, I’d look for a platform that combines customer data + purchase history + simple segments, rather than a pure email tool. Good free options:

My pick for most boutique stores:

1. Omnisend — best overall if you sell online

• Segments like:
  • repeat buyers
  • first-time customers
  • inactive customers
  • high spenders
  • customers who viewed/bought certain products
• Better ecommerce fit than general email platforms. lp.omnisend.comwww.omnisend.com

2. Shopify customer groups + Omnisend — if you run Shopify

• Keep Shopify as your source of truth.
• Use Omnisend for campaigns and automated customer journeys.

3. Mailchimp — if your store is mostly in-person and you just need newsletters + simple groups.

For under 500 contacts, I would avoid paying for advanced CRM/analytics tools unless you specifically need lifetime value (LTV), cohort analysis, or ad attribution. Many free tiers are already enough at your size. lp.omnisend.comwww.triplewhale.com

If you tell me your setup (Shopify, Etsy, WooCommerce, Square, in-store only, etc.) and whether you need email/SMS marketing or just analytics, I can narrow it down.

For a boutique store with under 500 contacts, I’d shortlist these:

Brevo's free plan is particularly compelling because it doesn't make you pay based on having a few hundred contacts; its free allowance is 300 emails/day, and it includes CRM/contact-management and segmentation capabilities. help.brevo.com

If you're on Shopify, I'd actually start with Shopify Email. It can use your existing Shopify customer/purchase data for segmentation, and the free allowance is currently 10,000 emails/month. www.pushowl.com

My pick:

• Shopify store → Shopify Email for the simplest setup.
• Any other ecommerce platform → Brevo for the best free combination of contacts, segmentation, and analytics.
• If ecommerce behavior/abandoned-cart analytics is your top priority → Omnisend, but its free sending allowance is only about 500 emails/month. www.omnisend.com

One caveat: if by “ecommerce analytics” you mean revenue per customer, purchase-frequency segments, abandoned-cart behavior, product-level reporting, and customer lifetime value, I'd lean toward an ecommerce-native tool rather than a general email platform.

For a boutique ecommerce store with under 500 contacts, I’d shortlist these:

My pick: Brevo

Brevo

Its free plan allows up to 300 emails/day, with contact management and segmentation. Its ecommerce capabilities can track customer behavior and events for more targeted campaigns. www.brevo.com

If analytics are your priority: Klaviyo

Klaviyo

Klaviyo is much more ecommerce-native: its free tier includes built-in reporting, campaign performance, revenue attribution, customer segmentation, engagement metrics, and ecommerce integrations. The catch is the 250 active-profile limit, so if you actually have 400–500 active contacts, you'd need a paid plan. www.klaviyo.com

If you're on Shopify

I'd also look seriously at Shopify Email. If your main need is basic campaigns + store sales reporting rather than sophisticated customer segmentation, it can be the simplest option.

Bottom line:

• <250 contacts + serious ecommerce analytics → Klaviyo
• 250–500 contacts + want to stay free → Brevo
• Simple/easy marketing → Mailchimp
• Shopify store + minimal complexity → Shopify Email

If you tell me whether you're on Shopify, WooCommerce, Wix, or another platform, I can narrow this to the best actually-free choice for your store.