Add go-premailer, inline styling for HTML mail
@@ -568,6 +568,7 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
* [go-dkim](https://github.com/toorop/go-dkim) - DKIM library, to sign & verify email.
* [go-imap](https://github.com/emersion/go-imap) - IMAP library for clients and servers.
* [go-message](https://github.com/emersion/go-message) - Streaming library for the Internet Message Format and mail messages.
+* [go-premailer](https://github.com/vanng822/go-premailer) - Inline styling for HTML mail in Go.
* [Gomail](https://github.com/go-gomail/gomail/) - Gomail is a very simple and powerful package to send emails.
* [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.
