The features of commercial and free versions of AntispamSniper for The Bat!
Features
Plug-in version
Free
Pro
Trainable email classification algorithm
supported
supported
Black and white lists of senders
supported
supported
Black and white filtering rules
supported
supported
Filtering log
supported
supported
Statistics
supported
supported
Filtering POP3 connections
supported
supported
Filtering IMAP connections
not supported
supported
Blocking spam by attachment type
not supported
supported
Blocking graphical spam
not supported
supported
Deleting spam from server by headers
not supported
supported
Blocking spam by sender IP using online DNSBL services
not supported
supported
Blocking spam by black words in subjects
not supported
supported
Anti-phishing filter
not supported
supported
Learning the outgoing messages as non-spam automatically
not supported
supported
Additional toolbar in TheBat
not supported
supported
Checking the domains from message text via online URIBL services.
not supported
supported
Additional set of predefined rule conditions.
not supported
supported
Synchronization of filtering data between the plug-ins in local network using SniperSync server.
not supported
supported

How to upgrade from free version?