jwSMTP is a GPL-licensed C++ library to facilitate sending email
programmatically. All you need to worry about is who the mail is from, who to
send it to and the message itself, no network coding necessary. It is able to
send mail in html or plain format. jwSMTP can send attachments, send to
multiple recipients including Cc/Bcc recipients. LOGIN and PLAIN SMTP
authentication. Do an MX lookup or send direct via an smtp server.

Supported platforms are BSD, Linux and Windows.

WWW: https://talk.mumbleface.net/jwsmtp/