This plug-in for The Bat! and Voyager prevents spam and phishing attacks by filtering POP3 and IMAP accounts. It uses headers to delete spam emails on the server.

Additionally, the plug-in has the ability to delete spam right on the server by headers using a list of account settings. The accounts for filtering can be added manually or automatically for non-secure connections. The rest of the messages are downloaded to the email client for filtering by full content and the messages with high spam ratio are moved to a special folder automatically.
In addition to the statistical algorithm, the plug-in also supports several complementary methods including black and white lists of email addresses, an anti-phishing filter, blocking spam by the IP address of the sender (using DNSBL services), and black and white Regexp-based rules.
Moreover, several methods are used for filtering graphical spam such as blocking spam with inline images linked to third-party web sites or blocking messages with animated GIF pictures in attachment. The plug-in also checks the domains from message text via a list of selected URIBL services, where messages having blacklisted domains in text are classified as spam.
Furthermore, the plug-in is integrated with SpamNet spam-fighting community, while SniperSync is a TCP server that allows AntispamSniper plug-ins to use the common whitelist of email addresses and a common database of message descriptors. The different copies of the plug-in in local network can use this common database via two-way synchronization with the SniperSync server.
Overall, the AntispamSniper plug-in is an effective tool that offers various methods to combat spam, making it a valuable addition to any email client.
Version 3.3.5.4: N/A
Version 3.3.5.1: N/A