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