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MailerSend is a flexible email API with a free tier, but the published pricing summary warns that caps, add-on costs and support caveats deserve a close look. In one Reddit thread, a sender handling about 10,000 non-marketing emails a month wanted better logging and reputation management, and said suppression-list automation was a sticking point. Here are seven alternatives for transactional sending, usage-based billing, separate message streams or email testing. Compare the listed starting prices with your actual volume before moving.
01Why people leave MailerSend
Suppression handling falls short
One Reddit user said MailerSend showed little interest in automating suppression-list removals, even after the issue was raised with support.
Debug detail is still pending
A commenter said additional debugging information had been on the roadmap for about a year, making troubleshooting a reason to look elsewhere.
You need more sending controls
A sender sought stronger logging, reputation management and one account for dozens of servers; commenters suggested SMTP2GO and Amazon SES.
02The alternatives, ranked by fit
- Best for support
SMTP2GOSMTP2GOSMTP2GO is the most directly relevant switch if you want to investigate a different relay after the Reddit thread’s complaints about suppression automation and debugging. Its listed fit includes transactional delivery, reports and support channels, and its starting price is $10 with a free plan. Commenters in that thread specifically recommended it, though that is not a guarantee it will solve your issue.
Trade-off: Its $10 starting price may compare poorly with usage-based billing.
7.8/10from
$10/mofree plan - Best for usage pricing
Amazon Simple Email Service (SES)Amazon Simple Email Service (SES)Amazon SES is worth comparing if your main concern is the bill: its listed starting price is $0, and the published summary points buyers to its usage charges. A Reddit commenter also named SES as an option. But the published material does not verify its capabilities, so confirm that its features and operating requirements fit before switching.
Trade-off: The published material does not verify SES capabilities or total usage cost.
3.0/10from
Freefree plan - Best for API and SMTP
MailgunMailgunMailgun is a fit to investigate if you want both API and SMTP sending, plus validation tools. The published summary lists a $15 starting price and a free plan, but its free tier is limited to 100 emails per day. That makes the free option useful for narrow testing, not a like-for-like substitute for a 10,000-email monthly workload.
Trade-off: The 100-email daily free limit is narrow for production use.
7.2/10from
$15/mofree plan - Best for message streams
PostmarkPostmarkPostmark may suit teams that want separate message streams or inbound email processing alongside transactional sending. Its listed starting price is $15 with a free plan. That gives you specific capabilities to compare with MailerSend’s API, but the published summary says the free tier is small and agency costs deserve scrutiny.
Trade-off: The free tier is small, and agency costs need scrutiny.
7.4/10from
$15/mofree plan - Best for developers
ResendResendResend is aimed at developers sending transactional email, with a free tier and API-first campaign tools listed in the published summary. It is worth comparing if you want those tools in one service. Paid pricing is not published in the material here, and the summary flags mixed reliability reports, so check both before committing.
Trade-off: Paid pricing is not published; reliability reports are mixed.
7.2/10from
Freefree plan - Best for campaigns too
Twilio SendGridTwilio SendGridTwilio SendGrid is a broader option if you want an email API, SMTP service and campaign tools rather than transactional sending alone. Its listed starting price is $19.95. The published summary also warns to check sending caps and account-approval risk before switching, so compare eligibility and limits against your sending needs.
Trade-off: Check sending caps and account approval risk before switching.
6.2/10from
$19.95/mo - Best for email testing
MailtrapMailtrapMailtrap is worth a look if your team needs staging-email testing as well as sending. The published summary lists both testing and sending, a free plan and a $12 starting price. But the products have separate pricing and usage caps, so check the cost of the specific product combination you would replace MailerSend with.
Trade-off: Testing and sending have separate prices and usage caps.
7.2/10from
$12/mofree plan
03Side by side
| Tool | Score | From | Free plan | Best for |
|---|---|---|---|---|
 MailerSend MailerSend (current) | 7.2 | $5.60/mo | Yes | Apps sending transactional email |
| SMTP2GO SMTP2GO | 7.8 | $10/mo | Yes | Apps needing transactional email delivery |
| Amazon Simple Email Service (SES) Amazon Simple Email Service (SES) | 3.0 | Free | Yes | Teams seeking pay-per-use email billing |
| Mailgun Mailgun | 7.2 | $15/mo | Yes | Developers sending transactional email |
| Postmark Postmark | 7.4 | $15/mo | Yes | Transactional email for applications |
| Resend Resend | 7.2 | Free | Yes | Developers sending transactional email |
| Twilio SendGrid Twilio SendGrid | 6.2 | $19.95/mo | No | Teams sending through an email API |
| Mailtrap Mailtrap | 7.2 | $12/mo | Yes | Developers testing staging emails |
Questions people ask
Why are people looking for MailerSend alternatives?
In one Reddit thread, a sender handling about 10,000 non-marketing emails a month wanted better logging and reputation management. A commenter said suppression-list removal automation was not being addressed and that additional debugging information had been on the roadmap for about a year. Those are user reports, not proof every MailerSend account has the same problems.
Which MailerSend alternative should I compare for 10,000 emails a month?
Start by comparing SMTP2GO, listed at $10 with a free plan, and Amazon SES, listed with a $0 starting price. The published material does not give enough SES usage-cost detail to estimate your bill, and it does not list exact caps for every option. Check your volume, feature needs and current MailerSend add-ons before deciding.
Is Amazon SES cheaper than MailerSend?
The published summary lists Amazon SES at $0 to start and MailerSend at $5.60 with a free plan. That does not establish which will cost less for your sending volume: SES usage charges and a full comparison of add-ons are not provided here. Compare the published usage rates and estimate your own monthly bill before switching.