diff --git a/README.md b/README.md
index 8c77bbe9bff..7c2f62b5570 100644
--- a/README.md
+++ b/README.md
@@ -608,6 +608,7 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
 * [go-simple-mail](https://github.com/xhit/go-simple-mail) - Very simple package to send emails with SMTP Keep Alive and two timeouts: Connect and Send.
 * [Hectane](https://github.com/hectane/hectane) - Lightweight SMTP client providing an HTTP API.
 * [hermes](https://github.com/matcornic/hermes) - Golang package that generates clean, responsive HTML e-mails.
+* [mailchain](https://github.com/mailchain/mailchain) - Send encrypted emails to blockchain addresses written in Go.
 * [mailgun-go](https://github.com/mailgun/mailgun-go) - Go library for sending mail with the Mailgun API.
 * [MailHog](https://github.com/mailhog/MailHog) - Email and SMTP testing with web and API interface.
 * [SendGrid](https://github.com/sendgrid/sendgrid-go) - SendGrid's Go library for sending email.