The Mobility Email client is a powerful Free (as in Freedom) Software email client that supports IMAP, POP and SMTP email. It features OpenPGP and S/MIME encryption, webmail support, and integrates seemlessly with the MobilityEmail.net service.
The Mobility Email client will work from any location on a computer or USB device. With no installation or configuration it allows you to access your email and contacts on multiple machines. Most importantly, no personal data is left behind once the application is closed.