Top Dog automatically builds and maintains whitelists.

Whitelists are lists of people or subject lines of an email that indicate the email is pre-approved.
Top Dog automatically builds and maintains whitelists.
This is a powerful method of preventing any possibility of mistaking legitimate email for spam.
You can always view and edit your whitelists within Top Dog.

Top Dog Security scans all incoming email.
While email that is whitelisted will never be treated as spam, Top Dog will still perform it's full suite of security checks on all email.
The reason for this is that the fact that someone is whitelisted does not guarantee they are not infected with a virus.

How it Works

• Upon install, Top Dog scans your "sent items" folder and extracts the email addresses of the people you have sent mail to.
• While running Top Dog regularly scans your address book and automatically whitelists the people in it.
• Every time you send an email to someone Top Dog automatically whitelists their address.
• Every time you receive an email from a whitelisted person Top Dog automatically whitelists the other recipients.
• Every time you send an email Top Dog automatically whitelists the subject line. This way if a different person replies to your email the reply will still get through.
• Top Dog automatically whitelists any email that is in reply to or refers to an email you have sent.
• Whenever you categorize an email as personal the sender is automatically whitelisted.
• If you receive an email via a mailing list that is whitelisted the sender of the email is automatically whitelisted.
  

Blacklists

Blacklists are lists of people or other features of an email that indicate the email is unwanted (i.e. Always considered spam).
Top Dog also automatically maintains a blacklist of people who's email you always want to reject.
Whenever you categorize an email as spam the sender is automatically added to your blacklist.
After that, anytime that sender tries to send you an email it is automatically flagged as spam.

When you blacklist or whitelist a sender that previously belonged to a different list Top Dog automatically removes the entry from the previous list.
For example, if you had accidentally whitelisted a sender and you then categorize an email from them as spam.
Top Dog will remove the sender from your whitelist and add it to your blacklist.