See also: Software, Software Categories
Alpine
msmtp
Mutt
Outlook
Pine
ssmtp
Thunderbird
configuring email clients
Courier
Cyrus
Dovecot
Postfix
Postgrey
pysieved
RainLoop - Web-based E-Mail
Sendmail
SquirrelMail - Web-based E-Mail (See also RainLoop)
configuring email servers