A lightweight crossplatform email client, supporting POP3, IMAP4 (fetch), [E]SMTP, SOCKS5, and MIME.
E-mail client for Windows and OS/2 that features support for multiple accounts. Email accounts are presented in an 'Explorer' type file tree. For security PMMail features full stenghth PGP with a license for international export.
Mail client for POP3 and IMAP on Windows and Macintosh platforms with support for remote administration and enhanced security.
Portable e-mail client developed for Amiga.
eMailman - AOL Alternatives
Alternative AOL email clients.
Cross-platform mail client, formerly known as M; available for Unix/X11 and, in a preview version, for MS Windows. Full support for MIME, SMTP, POP3, IMAP, NNTP, X-Faces and several different mail folder file formats. Full internationalisation support. Features embedded python interpreter for powerful scripting with full object-oriented access to internal structures and classes.
Information about the efforts of integrating an email and news client into Mozilla.