Neutral mentions of MailerLite

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.

If your priority is low starting cost + costs that don’t explode as your list grows, I’d shortlist Brevo, MailerLite, and beehiiv.

My ranking

Brevo is probably the best match for what you described. Its pricing is primarily based on monthly email volume rather than list size. The current Starter plan starts at $9/month for 5,000 emails/month, and you can buy additional email credits rather than being forced into a much larger contact-based tier. Brevo Help Brevo Help

That distinction matters a lot. For example, if you have 20,000 subscribers but only email them once a month, Brevo can be dramatically cheaper than a platform charging primarily by subscriber count. A recent 2026 pricing comparison likewise found Brevo particularly inexpensive at 25k–100k subscribers. Sasanova

MailerLite is my second choice if you want a more traditional email-marketing platform. Its current Free plan allows 2,500 monthly emails, while Comfort starts at $12/month and includes sending at 10× your subscriber count; Power starts at $25/month with unlimited monthly emails. MailerLite

beehiiv is especially attractive if this is primarily a newsletter/media business rather than ecommerce or general marketing. Its free Launch plan supports 2,500 subscribers with unlimited email sends, but the paid Scale plan jumps to $43/month currently. Beehiiv

The important distinction

I'd choose based on how you expect your list to behave:

• Lots of subscribers, relatively few sends: Brevo
• Normal business email marketing + automations: MailerLite
• Newsletter is the core product: beehiiv
• Creator-focused funnels/automations: Kit
• Avoiding vendor lock-in on pricing is a major concern: Brevo

If you tell me roughly how many subscribers you have now and how many emails you send per month (e.g. 2,000 subscribers / 8,000 emails), I can calculate the approximate monthly cost at 5k, 10k, 25k, 50k, and 100k subscribers and show you exactly where each platform becomes more/less expensive.

Brevo is probably the best match for what you described. Its pricing is primarily based on monthly email volume rather than list size. The current Starter plan starts at $9/month for 5,000 emails/month, and you can buy additional email credits rather than being forced into a much larger contact-based tier. Brevo Help Brevo Help

That distinction matters a lot. For example, if you have 20,000 subscribers but only email them once a month, Brevo can be dramatically cheaper than a platform charging primarily by subscriber count. A recent 2026 pricing comparison likewise found Brevo particularly inexpensive at 25k–100k subscribers. sasanova.com

MailerLite is my second choice if you want a more traditional email-marketing platform. Its current Free plan allows 2,500 monthly emails, while Comfort starts at $12/month and includes sending at 10× your subscriber count; Power starts at $25/month with unlimited monthly emails. mailerlite.com

beehiiv is especially attractive if this is primarily a newsletter/media business rather than ecommerce or general marketing. Its free Launch plan supports 2,500 subscribers with unlimited email sends, but the paid Scale plan jumps to $43/month currently.

The important distinction

I'd choose based on how you expect your list to behave:

If your priority is low cost + reliable suppression during a list consolidation, I’d put Brevo at the top of the shortlist.

Best affordable options

• brevo.com — best overall for consolidation

• Free plan; paid Starter starts at $9/month. Brevo Help
• Strong blocklist/suppression model: unsubscribes, spam complaints, and hard bounces are kept out of future sends. Brevo specifically recommends blocklisting rather than deleting so suppressed contacts can't accidentally be re-imported and mailed again. Brevo Help Brevo Help
• You can import an existing suppression/blocklist during migration, which is particularly useful for consolidating multiple databases. Brevo Help
• Segmentation can identify old, inactive, invalid, or otherwise problematic contacts before you send. Brevo Help
• My pick if list hygiene is the main requirement.
• mailerlite.com — best for a simpler interface

• Good automatic handling of unsubscribes and spam complaints; spam-reporting subscribers are automatically removed from active subscribers and can't receive future campaigns. MailerLite
• Its anti-spam policy is fairly strict about purchased, scraped, or stale lists, which is actually a positive if you're trying to maintain deliverability. MailerLite
• I'd choose this if you want simple email marketing rather than a more CRM-like contact-management system.

What I'd do for a consolidation

Don't simply merge all the active lists. Build a master suppression file first containing:

1. All historical unsubscribes.
2. Spam complaints.
3. Hard-bounced/invalid addresses.
4. Anyone who explicitly opted out of a particular brand or communication type.
5. Contacts whose consent/source can't be established.

Then import that suppression data into the new platform before importing the active lists. Brevo explicitly supports importing contacts as blocklisted during migration. Brevo Help

One important distinction: list hygiene ≠ email-address verification. These platforms are good at suppressing people who shouldn't be mailed and managing engagement, but if your merged lists contain lots of potentially invalid addresses, I'd consider running the new-to-you addresses through a dedicated email-verification service before the first large campaign.

Bottom line: For a cash-constrained consolidation, I'd choose Brevo if suppression integrity is the deciding factor, and MailerLite if simplicity is more important.

For low-volume but important transactional email, I’d put Brevo at the top of the list if you want one platform to handle both marketing and transactional mail.

Brevo supports marketing campaigns and transactional email through its API or SMTP relay. Its free plan currently includes 300 emails/day, including transactional email, and paid plans start at $9/month. help.brevo.com

My shortlist

Why I'd choose Brevo

The important distinction is that your transactional messages shouldn't simply be sent as ordinary marketing campaigns. Brevo has a dedicated transactional service, with SMTP/API sending, templates, delivery tracking, and transactional logs. help.brevo.com

For example, you could use the same account/domain infrastructure for:

• Marketing newsletters
• Product announcements
• Password resets
• Account verification
• Order/invoice confirmations
• Important system notifications

And at low volume, the free 300/day allowance may be enough without paying anything. help.brevo.com

One important caveat

Because the transactional mail is important, I'd configure it with proper domain authentication (SPF/DKIM) and keep marketing and transactional streams logically separated—ideally with different sending addresses/subdomains. Brevo specifically requires domain authentication as part of setting up transactional sending. help.brevo.com

If by "important" you mean mission-critical (e.g., password resets, financial receipts, security alerts), I'd actually consider Brevo for marketing + a dedicated transactional provider such as SES/Postmark/Resend rather than putting everything on one provider. The extra separation can protect transactional deliverability if a marketing campaign ever causes reputation problems.

Bottom line: For low volume + low cost + one platform, Brevo is probably the sweet spot. For maximum transactional reliability, I'd separate the two streams.

If your priority is lowest cost while still having GDPR/CCPA-friendly consent handling, opt-in tracking, and unsubscribe/preference management, I’d narrow it to these:

My pick:

Use Brevo if you want the cheapest option that still feels like a serious compliance tool. It has a strong GDPR-oriented setup (including consent records and double opt-in) without requiring an expensive plan. Sequenzy

A close second:

• Choose MailerLite if you only need newsletters, basic automations, and a clean interface. Sequenzy
• Choose Zoho Campaigns if minimizing monthly cost is the main goal and your needs are basic. Sequenzy

A few compliance caveats:

• No email platform alone makes you GDPR/CCPA compliant—you still need proper signup language, a privacy policy, lawful consent collection, and processes for deletion/access requests.
• For GDPR marketing emails, enable double opt-in and keep consent records (date, source, and what the person agreed to). Sequenzy WordStream

If you tell me your subscriber count (e.g., 500, 5k, 50k) and whether you send newsletters, SaaS lifecycle emails, or ecommerce emails, the cheapest choice may change.