Quick answer: The best MailerSend alternatives are Bluey Email (all-in-one marketing + transactional + CRM on one bill), Postmark (premium deliverability, Free 100/mo then $15), Amazon SES (cheapest at scale, $0.10 per 1,000 emails), Resend (best developer experience), and Brevo (transactional included on every plan). Your pick depends on whether you need marketing too, raw cost, or the cleanest API.
Full disclosure: Bluey Email is my own product. I have ranked it against the same criteria as everything else here and flagged where each rival is the better call.
MailerSend is a solid developer-first transactional service, but people look for alternatives for a few reasons: they want marketing and transactional email in one place, they need rock-solid deliverability for high-value mail, they want the lowest possible per-email cost, or they prefer a different developer experience. Here is how the main options stack up.
1. Bluey Email — best all-in-one alternative
Who it’s for: teams that want transactional and marketing email plus a CRM without juggling vendors. Price: Free 500 sends/mo; Spark from $7/mo; Grow $30/mo unlimited contacts; Business $300/mo. Where MailerSend keeps transactional and marketing in separate products, Bluey runs both from one workspace — verified first-hand, a single API key carries send, campaign, and CRM scopes at once. That consolidation is the specific reason it leads this list. Where MailerSend wins: if you never send marketing email, MailerSend’s pure-transactional focus is leaner.
2. Postmark — best for premium deliverability
Who it’s for: senders where a delayed receipt or password reset is unacceptable. Price: Free 100 emails/month forever, then Basic $15/month plus $1.80 per 1,000 (Postmark). Postmark, now owned by ActiveCampaign, has a long-standing reputation for speed and inbox placement. Dave Marshall, CTO of Childcare.co.uk, reports on Postmark’s own pricing page that “Postmark open rates were an 11% improvement over SES in our test” (Postmark). Where it loses: pricier per email than SES or MailerSend, and transactional-only. See Postmark alternatives for more.
3. Amazon SES — cheapest at scale
Who it’s for: high-volume senders with engineering resources. Price: $0.10 per 1,000 emails ($10 per 100,000), plus $0.12/GB for attachments (AWS). Nothing beats SES on raw cost, but you get an API and little else — no polished dashboard, templates, or support without a paid AWS plan. Where it loses: you build the tooling MailerSend gives you out of the box. More in Amazon SES alternatives.
4. Resend — best developer experience
Who it’s for: modern dev teams, especially React shops. Price: free tier, then roughly $35/month at 100,000 emails. Resend’s clean API and React Email tooling have made it a favorite for developers who value ergonomics. Where it loses: younger product, transactional-focused, thinner feature set than the incumbents. Compare in Resend alternatives.
5. Brevo — transactional on every plan
Who it’s for: senders who want marketing and transactional under one roof at a low entry price. Price: Free plan includes 300 emails/day and up to 100,000 stored contacts, with transactional email available on every plan (Brevo). Brevo is send-metered rather than contact-metered. Where it loses: its automation and CRM depth trail specialist tools.
How to choose
If you only need transactional email, weigh cost (SES), deliverability (Postmark), and developer experience (Resend) against MailerSend itself. If you also send newsletters or run a CRM, an all-in-one like Bluey or Brevo removes a whole vendor from your stack. Whichever you choose, run an email deliverability audit before you migrate so you carry over a clean list and proper authentication.
Frequently asked questions
What is the cheapest MailerSend alternative? Amazon SES at $0.10 per 1,000 emails, if you have the engineering resources to run it. For an all-in-one at low cost, Brevo’s free plan and Bluey’s free tier are strong.
Which alternative has the best deliverability? Postmark is the reputation leader for transactional mail, but deliverability depends heavily on your own list hygiene and authentication.
Do I need a MailerSend alternative if I also send marketing email? Likely yes — MailerSend is transactional-only. An all-in-one such as Bluey or Brevo keeps both streams and your contacts in one account.
References
- Postmark — Pricing: https://postmarkapp.com/pricing
- Amazon SES — Pricing: https://aws.amazon.com/ses/pricing/
- Brevo — Pricing: https://www.brevo.com/pricing/
- MailerSend — Pricing: https://www.mailersend.com/pricing
— Shivam