Mutt
VM
Gnus
Thunderbird
Outlook
Outlook Express
Lotus Notes
Eudora
Pine
Elm
Evolution
Balsa
KMail
Pegasus
Opera Mail
OS X's 'Mail'
AOL Communicator
Web Interface
mailx
less $MAIL
My favorite client isn't listed!
Open envelope, unfold letter
What mail? Nobody loves me.