Thunderbird does not have the concept of a "safe sender". it does exempt addresses in your selected address books from junk filters.

I fail to understand what your outlook safe senders list has to do with Thunderbird. You will have to expand on that one.

I do know we see a lot of folk with "toolbars" from antivirus products purporting to do SCAM or SPAM functions that basically do not work and weird things happen, like all mail is dumbed as SPAM etc.

I don't know what Thunderbird is and how it applies to my problem? Please help me understand how they connect.

You have posted a question in the Thunderbird email client support forum and don't know what Thunderbird is!

I am guessing this has something to do with matters other than Thunderbird support. Care to share what application is causing you problems?