sendEmail!

CMail is a command line mailer, originally developed for testing mail server software, but is simple enough to use interactively. CMail supports IPv6, TLS/SSL, authentication, multiple message body and attachment encoding methods, and mail delivery via proxies.

In the default mode, it transmits a mail to an SMTP server (for example at a free mail provider) which takes care of further delivery.To use this program with your mail user agent (MUA), create a configuration file with your mail account(s) and tell your MUA to call msmtp instead of /usr/sbin/sendmail.

SSMTP is a program which delivers email from a local computer to a configured mailhost (mailhub). It is not a mail server (like feature-rich mail server sendmail) and does not receive mail, expand aliases or manage a queue. One of its primary uses is for forwarding automated email (like system alerts) off your machine and to an external email address.