Mail Test

mail -s "some subject" test@gmail.com

or


Piping:

diarguet@rtp-lds-035:~$ cat mymessage | sendmail -i -t

Typing:

diarguet@rtp-lds-035:~$ sendmail -t
From: "Me" <me@codecall.net>
To: "Bob" <bob@yahoo.com>
Subject: First Email
MIME-Version: 1.0
Content-Type: text/plain

Hello, World!
.
diarguet@rtp-lds-035:~$ _