Alternatives to Resend
2 email tools you can use instead of Resend. Summaries come from each vendor's own site. Links checked Oct 16, 2026.
At a glance
Resend alternatives compared
| Tool | What it does | Open source | Head to head |
|---|---|---|---|
| AgentMail | Email inbox API for agents: create, send, and receive real inboxes. | No | Resend vs AgentMail |
| Mailgun | Email API to send, receive, and track email. | No | Resend vs Mailgun |
All 2 alternatives
FAQ
Questions
What are the alternatives to Resend?
Agent Stack Directory lists 2 other email tools: AgentMail, Mailgun.
Is there an open-source alternative to Resend?
None of the other email tools we list is marked open source.
What does Resend do?
Developer email API for transactional and marketing mail. (Summary based on resend.com, link checked 2026-10-16.)