A milter for archiving email
Versatile and Intelligent List Processor
simple efficient SMTP proxy in perl
Transparent SMTP proxy to prevent mail forwarding loops
feature-rich BSD mail(1)
Scalable groupware server
Scalable groupware server - common files
POP3 server supporting Maildir, PAM, vhosting
simple mail sorter
Perl-based spam filter using text analysis
Heuristic Email Address Tracker Utility for Spamassassin
milter for filtering mail through spamassassin
Python-based spam filter using statistical analysis
Client for SpamAssassin spam filtering daemon
spamassassin based SMTP/LMTP proxy daemon
Bayesian spam filter
RFC 7208 compliant SPF Milter for Sendmail and Postfix
query SPF (Sender Policy Framework) to validate mail senders
SPF tools (spfquery, spfd) based on the Mail::SPF Perl module
Postfix Greylisting Policy Server
Courier mail server - webmail server
German translations for the SqWebMail webmail service
command-line Sender Rewriting Scheme client
thread-centric mailer with tagging and fast search
SMTP command-line test tool
Light weight e-mail client with GTK+
Loadable modules for extending Sylpheed features
Full-text search program for Sylpheed or MH folders
Modern mailing list manager
mailbox synchronization tools
mailbox synchronization tools - GNOME applet
versatile and feature-rich email signature generator
mail/news client with RSS, chat and integrated spam filter support
BiDirectional support for Thunderbird
Links Pine and GnuPG together
display filter for Internet messages
external policy checker for the postfix mail server
Extract and browse the URLs contained in an email (urlview replacement)
c-client support programs
email autoresponder
mail user agent for Emacs
manage mail domains/accounts/aliases for Dovecot and Postfix
verify electronic mail addresses
Milter for ensuring email message from matches mail from
mswatch helper tools to watch maildirs and trigger on-demand syncs
Thunderbird extension to reduce header size
Provide CalDAV & CardDAV for TbSync
Provide Exchange ActiveSync (EAS v2.5 & v14.0) synchronization capabilities
Thunderbird/Lightning Add-On to support MS Exchange Calendar etc.
mail/news reader supporting IMAP for emacsen