msmtp -- SMTP plugin for MUAs This is a simple program that works as an "SMTP plugin" for Mutt and probably other MUAs (mail user agents). msmtp forwards mails to an SMTP server (for example at a free mail provider) which does the delivery. Features include: * SMTP AUTH methods PLAIN, LOGIN, CRAM-MD5 and XOAUTH2 * TLS encrypted connections * IPv6 support * robustness * detailed error messages (including the full answer of the SMTP server) if something goes wrong * sendmail compatible exit codes (which most MUAs understand). Simply tell your MUA to call msmtp instead of /usr/sbin/sendmail.