Thunderbird whitelist


New Email
Hi all,
Is it possible to set up a white list in Thunderbird email client?

What I would like to achieve, is to have every email received, marked as spam, and automatically moved to the spam folder, UNLESS the sender's address is listed in my Address Book.

I have no idea whether this is possible, much less how it would need to be setup. I suspect it's a non starter, but any information, and opinions would be welcome.