Rspamd is an anti-spam system designed to work faster than SpamAssassin by using the event model and various optimizations. Its most important features include regexp and Lua rules for filtering different parts of messages, a number of built-in functions for analyzing messages, fuzzy hash support, SURBL filters, email and character table support, a control interface for remote managing and stats gathering, a Lua plugin system, statistics support (OSB/Bayes), and an AJAX-based Web interface.
Clement is an email server application. Its main function is to block unwanted mail (spam) as soon as possible in the email exchange process. It accepts or rejects email while the SMTP session, initiated by the email sender, is still pending, accepting legitimate email messages without the need to return an error status to non-existent or "borrowed" return address later. Clement can operate in two modes, either as a standard MTA (as sendmail, Postfix, Exim, Exchange, etc.) to store email in the recipient's own area, or to transmit the mail to an another SMTP server acting as smart spam filtering device. Each email domain name Clement knows about can be treated in one of these two modes depending on the group to which the domain name has been set. Each message is verified by a virus scanner (ClamAV) while the SMTP connection is still open, but the refusal of mail and the reason for refusal is notified to the actual sender. Mail management is done via a Web interface and can be delegated to three administrative levels (Root-Admin, Group-Admin, Domain-Admin). Standard users can access their own logs (sent email status, email rejected, quarantined email, etc.). With this interface, the user can handle the rejection and acceptance of mail. Users who are level "Admin" can access the session logs (via the Web interface). Clement uses a SQL database (PostgreSQL, MySQL) to store and manage logs, user profiles, and dynamic management of directives concerning the sender-receiver relationship.
Jaro Mail is an integrated suite of interoperable tools for GNU/Linux and Apple/OS X to manage email communication in a private way, without relying on online services (in fact, encouraging users to store email locally). It mainly features a system for mailinglist filtering, address-book integrated whitelisting, strong encryption and anonymous remailing, long-term email storage and archiving with functions for fast search and usage statistics. To accomplish all that, it makes use of solid Unix tools like Mutt, Fetchmail, Mairix, Msmtp, GnuPG, Abook, ELinks, and Mixmaster.
Avelsieve is a Squirrelmail plugin for creating Sieve scripts on a Sieve-compliant (RFC 5228) mail server. Sieve is a mail filtering language intended for server-side filtering of email messages. Avelsieve provides a user-friendly interface for adding and manipulating mail filtering rules.
SMS Manager is a replacement for the default messaging application for the Android operating system. It features seperation between the inbox and outbox, a detailed folder view in the inbox (unread, read folders), a detailed folder view in the outbox (sent, draft, undelivered folders), and a spam filter for unwanted senders.
PicoMail is a fast, feature-rich mobile email application for any Java (J2ME, MIDP 2.0) or Symbian cellphone. PicoMail supports easy email account configuration, HTML messages, graphics, attachments, SMS / MMS, cookies, automatic spam filtering, search, hyperlinks, security, and much more. Image support includes GIF, JPEG, PNG, TIFF, and BMP. Images can be zoomed, viewed in fullsize, saved, sent via SMS / MMS, and analyzed with OCR. POP3, IMAP, and SMTP (secure and non-secure) are supported. Links can be followed within email messages. Word, Excel, WordPerfect, image, Zip, and PDF attachments can be opened. Other features include keyword searching, audio and video playback, contact list importing, and support for Unicode and many other character encodings.
Spampig DnsblCheck takes the IP address of a mail server and looks it up in common blacklists and whitelists. The program tests against the major block lists from Spamhaus, SORBS, Spamcop, Barracuda, UCEProtect, and others. In addition to blacklists, it also checks against IP address and domain name whitelists and even checks PTR record integrity. The program returns results quickly, typically in less than a few seconds. If you don't get results quickly, it indicates you may have DNS problems and knowing this can also be useful. This application can be useful to spam fighters and email users who are struggling to find out why their messages are being blocked.
ClamAV Unofficial Signatures Updater is a script that provides a simple way to download, test, and use third-party ClamAV signatures. It checks for updated unofficial clamav signature database files and can download them. It randomizes download time to help distribute the load more evenly for the database host mirror sites. Signature bypass entries can be created for temporarily resolving false-positive issues with third-party signatures. It can report which mirror site a download came from. It reports if a downloaded database is actually different than the running copy. Many other features are supported.