* [Kurrier v3.9.0](https://github.com/kurrier-org/kurrier) – Modern self-hosted webmail connecting IMAP, SMTP, SES, SendGrid, Mailgun and more into a unified, privacy-focused interface.

* [Mailgun with Go v5.19.3](https://github.com/mailgun/mailgun-go) – Go library for interacting with the Mailgun API to send emails and manage events.