We may earn a commission if you buy through links on this page. It never changes a score or a ranking. How we make money
Amazon Simple Email Service (SES) is a usage-based email service aimed at AWS teams and projects with variable sending volume. Its listed usage rates are clear, but the integration contract and production limits need verification. The alternatives below are hosted APIs, SMTP relays or email platforms, not self-hosted replacements. Compare them against your monthly volume, sending path and migration requirements: listed starting prices alone do not establish which service will cost less at your traffic level.
01Why people leave Amazon Simple Email Service (SES)
Forecast costs at your volume
Usage-based rates can suit changing volume, but teams should model their own send mix before deciding whether a different pricing plan fits.
Verify production limits
The integration contract and production limits need verification; confirm quotas, account rules and failure handling before moving production traffic.
Check integration fit
A replacement changes the sending contract. Compare API or SMTP support and migration paths before adapting production email code.
02The alternatives, ranked by fit
- Transactional email
PostmarkPostmarkPostmark fits teams that want transactional sending through an API or SMTP, plus inbound email webhooks. Its listed price starts at $15 with a free plan; costs rise with volume, so model expected sends before moving off SES. API and SMTP support give teams options when adapting an existing sender.
Trade-off: It is hosted, and costs rise with volume.
7.8/10from
$15/mofree plan - REST API
ResendResendResend is a fit for developers building transactional email with a REST API or using React Email. It has a free plan, but confirm paid rates and limits before estimating production costs. Like SES, it is a hosted service, so compare its API and operational fit with your current sending code before migrating.
Trade-off: Paid rates and limits need confirmation; it is hosted.
7.2/10from
Freefree plan - API or SMTP
MailgunMailgunMailgun supports sending through an API or SMTP and includes validation tools, making it worth evaluating if those match your application’s workflow. Its listed starting price is $15, with a free plan. Check sending limits, account rules and migration options, then compare the expected bill with SES at your actual volume.
Trade-off: Verify sending limits, account rules and migration options.
7.1/10from
$15/mofree plan - Sending and QA
MailtrapMailtrapMailtrap combines email sending, campaigns and a QA sandbox, with REST API or SMTP integration. That may suit teams consolidating sending and email testing in one hosted service. Its listed price starts at $12 with a free plan; check plan-based limits and compare them with your SES sending volume.
Trade-off: Plan-based limits can constrain the fit.
7.7/10from
$12/mofree plan - Client-side templates
EmailJSEmailJSEmailJS is designed for client-side apps that trigger templated email through existing delivery providers. That provider layer may reduce the work of switching delivery services compared with replacing every sending integration. The listed starting price is $7.20 with a free plan; check request limits against your expected volume.
Trade-off: It adds a hosted layer between the app and delivery provider.
7.3/10from
$7.20/mofree plan - Lower starting price
MailerSendMailerSendMailerSend offers a hosted email API and also supports SMS and WhatsApp, which may fit teams that want those channels alongside email. Its listed starting price is $5.60 with a free plan. Check plan costs and suppression workflows, then map the API changes needed to replace SES in your application.
Trade-off: Check plan costs and suppression workflows.
7.2/10from
$5.60/mofree plan - Managed SMTP relay
SMTP2GOSMTP2GOSMTP2GO is a managed email relay with reporting, aimed at teams replacing local SMTP relays or sending at low volume. Its listed starting price is $10 with a free plan. Verify the API and sending limits before production, and compare its SMTP integration with the sending path your SES implementation uses.
Trade-off: Verify API and sending limits before production.
7.4/10from
$10/mofree plan
03Side by side
| Tool | Score | From | Free plan | Best for |
|---|---|---|---|---|
 Amazon Simple Email Service (SES) Amazon Simple Email Service (SES) (current) | 4.0 | Free | Yes | AWS teams evaluating usage-based email |
| Postmark Postmark | 7.8 | $15/mo | Yes | Apps sending transactional email |
| Resend Resend | 7.2 | Free | Yes | Apps sending transactional email |
| Mailgun Mailgun | 7.1 | $15/mo | Yes | Apps sending transactional email |
| Mailtrap Mailtrap | 7.7 | $12/mo | Yes | Teams needing sending and QA in one service |
| EmailJS EmailJS | 7.3 | $7.20/mo | Yes | Client-side apps sending templated email |
| MailerSend MailerSend | 7.2 | $5.60/mo | Yes | Apps sending transactional email |
| SMTP2GO SMTP2GO | 7.4 | $10/mo | Yes | Apps sending transactional email |
Questions people ask
Which SES alternative should developers evaluate first?
For API-based transactional email, compare Postmark, Resend and Mailgun: their listed integration options include API support, and Postmark and Mailgun also support SMTP. If you need inbound email webhooks, Postmark lists them. Choose based on your sending path, limits and expected volume rather than feature names alone.
Which alternative is cheaper than SES?
The listed SES starting price is $0, so a higher listed starting price does not prove an alternative will be cheaper. Resend has a free plan, and several other services list free plans alongside paid starting prices. Compare plan limits and your actual monthly volume; Resend’s paid rates need confirmation.
Can I self-host an SES alternative?
The alternatives covered here are hosted services, APIs or managed relays; none is presented as an open-source or self-hosted replacement. If avoiding provider lock-in matters, ask each vendor about data export, sender and domain portability, event-history retention and what happens when you close an account.