Open Source Email SMTP

Relay

Reliable email sending and automation with developer friendly APIs

email Notifications Emal SMTP

go golang javascript php typescript

Visit Website Repository Main Repository Official Documentation API Console (API Reference & Examples)

Screenshots

A closer look at the product interface and key surfaces.

5 images

At a glance

Primary use case: Reliable email sending and automation with developer friendly APIs
Best for: Email SMTP — email, Notifications
Stack: go, golang, javascript, php
License: AGPL-3.0
Maintenance: 1 week ago
Access: Open source
Documentation path: https://relay.hyvor.com/docs/api-console

Resource map

Website

https://github.com/hyvor/relay

Repository

https://github.com/hyvor/relay

Documentation

https://relay.hyvor.com/docs/api-console

Source

https://github.com/hyvor/relay

About this tool

Relay is a modern email sending platform with APIs for automation, notifications, and transactional emails. Built for developers to send, track, and manage emails reliably at scale.

Repository

Stars

701

Forks

Issues

License

AGPL-3.0

Last Push

1 week ago

Features

Self‑hosted open‑source email API for developers as an alternative to SES/Mailgun/SendGrid
REST API with email sending, domain & webhook management
Built‑in DNS automation, bounce/feedback handling, and observability support