Use this menu to setup Self-learning
Spam Detector.
Check/uncheck 'Observe/Learn incoming
email messages and calculate spam probability'
to Enable/Disable the Spam Detector.
Use the next two checkboxes to
setup actions that will be applied to messages
that have large or small Spam Probability rating.
Third checkbox stops refreshing
spam probability rank for messages that have been
calculated.
Spam Detector dictionary statistics
are at the bottom.
Trim the dictionaries button
removes unfrequent words from the dictionaries.
This option clears unusual rare words and is useful
when your dictionary sizes are very large.
Clear All removes all the dictionary
data.
Check/uncheck 'Auto-trim
the Dictionaries' to Enable/Disable auto-trimming.
This option trims the dictionaries automatically
if it takes a long time to calculate spam probability
ratings.
Read
more about Spam Detector