msmtp: msmtp is an SMTP client.
msmtp:
msmtp: Features include:
msmtp: -Sendmail compatible interface (command line options and exit codes).
msmtp: -PIPELINING support for increased transmission speed.
msmtp: -DSN (Delivery Status Notification) support.
msmtp: -IPv6 support.
msmtp: -Authentication methods PLAIN, LOGIN, and CRAM-MD5.
msmtp: -Support for multiple accounts.
msmtp:
msmtp: http://msmtp.sourceforge.net