Friends
The list of
friends contains email addresses with display names. The messages from these addresses
are recognized as non-spam automatically. The checking is executed before
applying the rules and using the statistical classifier. That is why
the messages from friendly addresses will never be filtered as spam.
There are following options on Filtering page of the
main configuration window:
- Learn the messages from friends as normal.
The messages from friendly addresses are considered as non-spam and
so teaching the classifier on them will be good for classification quality.
But sometimes spammers insert a valid, existing email address to the "From"
field. Therefore the probability of receiving a spam message with sender address
from whitelist is greater than zero. If this option will be enabled, then
the filter will learn spam as normal letter. And apparently the quality of
classification will go down in that case. You should keep an eye on incoming
messages, timely detect misclassified spam and teach the filter. The plug-in
automatically removes email addresses met in spam (in "From" field)
from the whitelist.
- Add friends automatically.
The plug-in automatically adds to whitelist email addresses of senders from
the messages learned as non-spam. You can feed a set of non-spam messages
you have to the plug-in right after the installation. In that case a whitelist
will be filled with the contact addresses of your friends automatically.
- Ignore emails without display names.
The probability of misclassifying a spam message with friendly sender
address is greater than zero. You can make it much lower by filling the whitelist
only with addresses having display names. This option restricts plug-in from
adding addresses without display names to the whitelist during learning on
non-spam messages.
You can change the whitelist manually in a window for editing friendly addresses.
Also you can export and import whitelist items from the text files on disk.
The wildcards are allowed in display names and addresses. For example, you can
set "*" as a display name if you want the plug-in to ignore it (check
only email address) for certain friendly contact. "*@<server>"
as email address means that all users of that email server are whitelisted.