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 building autonomous agents weigh. Free tier and entry price sit with each pick above.
| Provider | Inbound parsing | Idempotency keys | Webhooks | Operating since | Event stream | Best published rate per 1,000 | Batch sending | SDKs | Multi-tenant |
|---|---|---|---|---|---|---|---|---|---|
| Postmark | Yes | No | Yes | 2010 | Yes | $1.50 | Yes | node, python, go, ruby, php, java, elixir, rust, dotnet | Yes |
| Mailgun | Yes | No | Yes | 2010 | Yes | $0.70 | Yes | node, python, go, ruby, php, java | Yes |
| Amazon SES | Yes | No | No | 2011 | Yes | $0.10 | Yes | node, python, go, ruby, php, java, rust, dotnet | No |
| Mailtrap | No | No | Yes | 2014 | Yes | Tiers not published in comparable form | Yes | node, python, go, ruby, php, elixir | Yes |
| Loops | No | No | Yes | 2022 | Yes | Tiers not published in comparable form | Yes | node, python, go, ruby, php | No |
| Brevo | Yes | No | Yes | 2012 | Yes | Tiers not published in comparable form | Yes | node, python, go, ruby, php, java, dotnet | No |
| Elastic Email | Yes | No | Yes | Not published | Yes | Tiers not published in comparable form | Yes | node, python, php, java, dotnet | Yes |
| SendPulse | No | No | Yes | Not published | Yes | Tiers not published in comparable form | Yes | None | No |
| Resend | Yes | Yes | Yes | 2023 | Yes | $0.35 | Yes | node, python, go, ruby, php, rust, java, elixir, cli | No |
If you are teams building autonomous agents
An agent stack treats email as a two-way primitive. Inbound has to arrive as structured JSON a tool call can consume, sends have to be safe to retry when a model loop repeats itself, and every action needs an audit trail. A provider without inbound parsing only solves half the problem.
The order above is the general editorial ranking. Re-sorted against inbound parsing, idempotency keys, and webhook coverage, the shortlist for inbound parsing into tool calls and model-generated sends that must not duplicate becomes Resend, Postmark, and Mailgun. That differs from the headline order, which weighs all audiences together.