Version 1.2 of SpamSieve is now available.

This is a free update that includes the following changes:

• Added support for Emailer 2.0v3 and Eudora (5.2 and later).
• Decodes base64 and quoted-printable text parts, thus finding words that spammers try to hide from anti-spam software.
• Decodes subjects that use different character sets (e.g. big5).
• Adds special tokens for MIME entities such as part boundaries and uninterpretable message parts.
• Keeps track of the messages added to the corpus, and can optionally prevent you from adding the same message more than once (biasing the counts). Thus, you no longer have to remember which messages you’ve already added.
• You can now “undo” adds to the corpus, e.g. if you added a message as good when you meant to add it as spam.
• Can now add messages to the corpus as they are filtered, so after the initial training you only have to add messages when SpamSieve makes a mistake.
• When filtering a message, SpamSieve can optionally check whether the message is in the corpus. If it is, SpamSieve looks up the answer rather than trying to predict. One use of this feature is that if SpamSieve makes a mistake, you can Add Spam and then Label/Move If Spam and be sure that the message will be labeled/moved.
• Keeps a log of additions to the corpus, filtering results, and errors.
• Mailsmith: If SpamSieve thinks a message is spam, it sets the deleted property of the message to true; otherwise it sets the flagged property of the message to true. Therefore, if SpamSieve has classified the message then exactly one of the properties will be true, and if it hasn’t they’ll both be false. (Normally, neither of these message properties is used by Mailsmith itself.)
• Entourage and PowerMail: If you tell SpamSieve to move spam messages to a spam folder and the spam folder doesn’t exist, the script will create the spam folder for you.
• When you add spam messages to the corpus, can optionally move them to a Spam folder.
• Added status indicators in the Dock icon (like Norton DiskLight).
• The spam probability of unknown words is now 0.4 instead of 0.2.
• The Corpus window uses less memory and sorts much faster.
• Accuracy tracking is faster and uses less memory and disk space.
• Fixed bug where accuracy tracking didn’t work for some Mailsmith messages with multiple parts.
• Improved the manual’s instructions for e-mail client integration.
• Compiled with GCC 3 for greater speed.
• Uses the latest version of the eSellerate SDK, which eliminates a crash at startup under certain circumstances.
• No longer shows the “Upgrading From 1.0” message when starting with a blank corpus.

For more information, please see the SpamSieve Manual.