📨 Open-Source Email API for Developers. Cloud & Self-hosted Alternative to SES, Mailgun, SendGrid.
- Recommended by
- 1
- GitHub stars
- 920
- Licence
- AGPL-3.0
- Language
- PHP
- Last commit
- 2 Nov 2026
What people said
“For the past two months, I have been working on Hyvor Relay, an open-source, self-hosted alternative to AWS SES, Mailgun. It's been an awesome ride learning SMTP and DNS in depth. And, we're pretty close to a beta release.”
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