AntispamSniper for The Bat! provides professional antispam and anti-phishing protection for your mailbox. A combination of several methods for automatic email classification results in an excellent filtering quality with the minimum error rate. The plug-in has a built-in option allowing deleting spam from the server by headers. The good messages deleted by mistake from server by header can be restored within a certain period of time after deletion. The plug-in filters POP3 and IMAP accounts.

Key features:

The statistical trainable classification algorithm has unique characteristics. It analyzes your private correspondence, singles out distinguishing features from messages of different classes and uses this information for the effective analysis of incoming messages. The algorithm constantly improves its classification quality with each new processed message. It is possible to track back the history of classifying messages and training the plug-in using a filtering log.
The plug-in can delete spam right on the server by headers, using a list of account settings. The accounts for filtering can be added manually or automatically. The rest of messages are downloaded to email client for filtering by full content, and the messages with high spam ratio are moved to a special folder automatically.
The plug-in supports several complementary methods in addition to statistical algorithm: black and white lists of email addresses, anti-phishing filter, blocking spam by IP address of the sender (using DNSBL services), black and white Regexp-based rules.
Several methods are used for filtering graphical spam:
- Blocking spam with inline images, linked to third-party web sites.
- Blocking the messages with animated GIF pictures in attachment.
- Blocking the messages by the type of attachment.
- The statistical classifier is optimized for blocking spam with a picture and some amount of unlinked text.   

The plug-in is checking the domains from message text via list of selected URIBL services. The messages having blacklisted domains in text are classified as spam.

SniperSync is a TCP server, allowing AntispamSniper plug-ins to use the common whitelist of email addresses and common database of message descriptors. The different copies of plug-in in local network can use this common database via two-way synchronization with the SniperSync server. 

An additional toolbar is displayed in TheBat interface, providing fast access to the main plug-in functions:


The plug-in works with The Bat! and Voyager. It doesn't use system registry and it is possible to install it to USB drive for using with Voyager.
Unfortunately the plug-in is unable to add a toolbar in Voyager and some versions of TheBat. Here is an intruction how to add it manually: http://antispamsniper.com/forum/viewtopic.php?t=491
TheBat 5.x shows security warnings when the plug-in filters SSL connections. Here is an instruction how to avoid this: http://antispamsniper.com/forum/viewtopic.php?t=504
Have a question? Ask here: http://antispamsniper.com/forum/viewforum.php?f=2
Online manual: http://antispamsniper.com/help/tbp