a tool to help users using Pine send messages through anonymous, Type-I (cypherpunk) remailers. It works at the sending-filter level, and supports several techniques to ensure the anonyminity of senders, such as latency and garbage footers
Attachment Ripper And DIsplacement System: a filter that removes attachments from email. The removed attachment is sent to a specfied resource for storage. The attachemnt is replaced with a notice of where the removed attachment may be found
a Perl script that you slip between your MTA (e.g. Sendmail) and your local mailer (e.g. Procmail) to strip potentially nasty attachments from email messages
cupyvei writes mail or other logs to a file which is repeatedly overwritten. It is for finding out about someone flooding your mail queue without keeping logs for a long time.
a layer of glue code that enables you to write Python code to scan email messages at SMTP-time with the Exim MTA (mail transport agent). elspy also includes a small Python library with common mail-scanning tools, including an interface to SpamAssassin and a simple-but-effective virus detector
Enigmail is an extension to the mail client of Mozilla / Netscape 7.x which allows users to access the authentication and encryption features provided by the popular GnuPG software. Read more
pretends to be a POP3 server which has no mail for the user (no matter what userid or password is supplied)
gtk_rotx is a small GTK-application to encrypt and decrypt texts using the "rot" encryption.
lets you manage mail filtering Sieve
scripts remotely using the KDE applications
Konqueror and KWrite
Mailcrypt is an Emacs Lisp package which provides a simple interface to public key cryptography with PGP [and now GnuPG!]. Mailcrypt makes strong cryptography a fully integrated part of your normal mail and news handling environment. Read more
reads a mail header on stdin and dumps a trace of smtp hosts in a human readable manner on stdout
Mikrop is a small, easy to install program for e-mail servers to scan incoming e-mails. It uses third party virus scanners.
Nasty is a program that helps you to recover the passphrase of your PGP or GPG-key in case you forget or lost it.
designed to integrate virus scanning into an e-mail server. It curently only supports qmail as an MTA and McAfee VirusScan for Unix as an AV scanner
a Pine filter written in Perl that allows one to use encrypt/sign/decrypt/verify one's email messages with GPG or PGP5
Pine Privacy Guard
a small perl script to interface Pine and GnuPG for the secure exchange of email
an addon that enables a Qmail Email server to scan all gatewayed Email for certain characteristics. It is typically used for its anti-virus protection functions, in which case it is used in conjunction with commercial virus scanners
a seventeen line procmail script fragment can be used to quarantine most malicious Microsoft Outlook attachments
a simple sendmail milter which adds an X-RBL-Warning header to any emails that are received that come from an open relay as determined by your choice of RBL checking service
for auditing the IP addresses in e-mail "Received: " headers, and contains parsers and high speed database query programs to validate IP addresses in e-mail
an e-mail filter/processor that runs from a user's .forward file. It is designed to protect end users (particularly those using Windows) from malicious e-mail attachments containing viruses or trojans
can be used to generate a graph of all of the signature relationships in a GPG/PGP keyring, like those resulting from keysigning parties, or the Debian Keyring
(commercial) Sophos PureMessage is a complete email filtering system for spam protection, virus protection, and corporate policy enforcement.
SwenDeleter tries to identify email messages infected with the Swen. A worm in POP3 mailboxes and delete them on the server. It applies some heuristics to the headers and size of the messages, in order to avoid
downloading the actual email, thus making retrievals less taxing.