About.com: Mailing From Scripts Jul 29, 2000, 12 :38 UTC (3 Talkback[s]) (4528 reads) (Other stories by Aron Hsiao)
"The old Unix mailer at /bin/mail is one of the programs that really helped to launch the
Internet as we know it today. In days gone by, it was one of the most used binaries on
any Unix workstation. Today, the /bin/mail binary can still be used,
but is horribly outdated -- it's a text-only mailer with almost no
features at all."
"It is good, however for one thing: automated mailing, such as
sending e-mail from a shell script. To send mail with the /bin/mail
program, use this syntax: