9 Best SendGrid Alternatives (2026), Tested
Recommendations for teams leaving SendGrid after the May 2025 free-tier removal.
criteria
- Free tier
- API ergonomics
- Deliverability
- Migration effort
- 01
Postmark
TransactionalFor teams that valued SendGrid as transactional only.
- 02
Mailgun
TransactionalClosest API ergonomics if you used the SMTP plus API combo.
- 03
Amazon SES
TransactionalFor volume-heavy senders with AWS infrastructure.
- 04
Mailtrap
Transactional TestingTesting plus sending with a generous free tier.
- 05
Loops
Marketing TransactionalIf you used SendGrid for marketing as well as transactional.
- 06
Brevo
Transactional MarketingClosest replacement for SendGrid Marketing Campaigns.
- 07
Elastic Email
Transactional MarketingLower-cost API and SMTP relay if price matters more than brand recognition.
- 08
SendPulse
Transactional MarketingBest SendGrid alternative when free SMTP volume is the deciding factor.
- 09
Resend
TransactionalModern API for new React stacks. Confirm volume pricing fits.
All 9 compared
Every provider in this ranking against the priorities teams choosing a transactional API weigh. Free tier and entry price sit with each pick above.
| Provider | Idempotency keys | Webhooks | Event stream | Operating since | Suppressions API | Best published rate per 1,000 | Batch sending | SDKs |
|---|---|---|---|---|---|---|---|---|
| Postmark | No | Yes | Yes | 2010 | Yes | $1.50 | Yes | node, python, go, ruby, php, java, elixir, rust, dotnet |
| Mailgun | No | Yes | Yes | 2010 | Yes | $0.70 | Yes | node, python, go, ruby, php, java |
| Amazon SES | No | No | Yes | 2011 | Yes | $0.10 | Yes | node, python, go, ruby, php, java, rust, dotnet |
| Mailtrap | No | Yes | Yes | 2014 | Yes | Tiers not published in comparable form | Yes | node, python, go, ruby, php, elixir |
| Loops | No | Yes | Yes | 2022 | Yes | Tiers not published in comparable form | Yes | node, python, go, ruby, php |
| Brevo | No | Yes | Yes | 2012 | Yes | Tiers not published in comparable form | Yes | node, python, go, ruby, php, java, dotnet |
| Elastic Email | No | Yes | Yes | Not published | Yes | Tiers not published in comparable form | Yes | node, python, php, java, dotnet |
| SendPulse | No | Yes | Yes | Not published | Yes | Tiers not published in comparable form | Yes | None |
| Resend | Yes | Yes | Yes | 2023 | Yes | $0.35 | Yes | node, python, go, ruby, php, rust, java, elixir, cli |
If you are teams choosing a transactional API
Judged purely as an API. What the request contract guarantees on retry, how complete the webhook event coverage is, whether suppressions are readable and writable programmatically, and how much the message log retains when something needs debugging in production.
The order above is the general editorial ranking. Re-sorted against idempotency keys, webhook coverage, and event stream, the shortlist for high-frequency programmatic sends where a missed delivery is a product failure becomes Resend, Postmark, and Mailgun. That differs from the headline order, which weighs all audiences together.