command line emails from ubuntu

frome the excellent post of  http://askubuntu.com/questions/12917/how-to-send-mail-from-the-command-line

• Install ssmtp : sudo apt-get install ssmtp
• Edit the ssmtp config file : gksu gedit /etc/ssmtp/ssmtp.conf
• Enter this in the file:
  root=username@gmail.com
  mailhub=smtp.gmail.com:465
  rewriteDomain=gmail.com
  AuthUser=username
  AuthPass=password
  FromLineOverride=YES
  UseTLS=YES
  
  
  you can then use 
  mutt or mailx to send your emails from command line