An ESMTP client and server library written in Go.
- ESMTP client & server implementing RFC 5321
- Support for additional SMTP extensions such as AUTH and PIPELINING
- UTF-8 support for subject and message
- LMTP support
The Go standard library provides a SMTP client implementation in net/smtp.
However net/smtp is frozen: it's not getting any new features. go-smtp
provides a server implementation and a number of client improvements.
MIT