Mail Clients

• Arrow
  "Powerful, easy to use e-mail program for X"
• Elm
  Widely used mail client
• imp
  IMAP WebMail Program
• Ishmail
  Commercial mail client for X
• ML
  An X/Motif mail client
• MultiMail
  Offline Blue Wave/QWK mail packet reader
• Mutt
  Curses-based mail client
• mxMail
  An X/Motif mail client
• Netscape Communicator
  Specifically, Communicator for X's Netscape Messenger componant
  (or Navigator for X's Netscape Mail componant)
• Pine
  Great mail client with so-so news capabilities
• Sandmail
  GTK-based mail client. The project has been abandoned, but you can still d/l it and/or take it over.
• tkMail
  Tcl/Tk and Perl based mail reader for X
• TkRat (Ratatosk)
  Tcl/Tk mail client for X
• XFMail
  XForms-based mail client
• Z-Mail^®
  Commercial mail client for X/Motif

Mail Servers

• BlackMail
  System wide anti-spam mailer filter that wraps around existing mailer
• exim
  Similar in style to Smail 3, anti-spam and anti-mail bomb features
• qmail
  SMTP server alternative to sendmail
• Qpopper
  POP3 server from the makers of Eudora (a Win/Mac mail client)
• Sendmail
  Veeeery widely used SMTP server
  • Sendmail.cf generator Fill in the blanks on this web page and it'll generate a sendmail.cf for you
  • Spamcan
    A sendmail v8 patch to capture spam by regexp
  • Using check_* in sendmail 8.8
• UW IMAP
  IMAP server from the authors of Pine (University of Washington)

Mail Utilities

• Fetchmail
  Formerly popclient; a POP2, POP3, RPOP, APOP, KPOP, IMAP, and ESMTP ETRN remote mail retrieval and forwarding utility
  Use this to download mail from your ISP's mail server
• Fidogate
  Internet <-> FidoNet gateway software
• Ifmail
  Fidonet to Internet mail and news gateway program
• KBiff
  An xbiff-like mail notification utility for KDE
• Listar
  "Modular mailing list management"
• Majordomo mail list and archive site
  Mailing list software written in Perl
• minordomo
  "...is a minimalistic replacement for majordomo." (see above)
• Procmail
  Local mail delivery agent with powerful scripting/filtering capabilities
  • Cameron Laird's personal notes on procmail
  • Getting Started With Procmail
  • Procmail FAQ
  • Procmail tips page
• TaRT
  The Automatic Random Tagline