I recently installed a replacement Desktop computer and installed Thunderbird as is on my laptop. I Sync both machines. Under my old setup both Spam and Junk worked fine with Junk going to Junk folder and nothing to Spam that I remember. Now about 80% to 90% of incoming mail goes to Spam folder on both machines and I can't find any way to fix it. No settings for Spam. 1) I have entered good mail addresses into my address book in both computers. 2) I have selected Not Junk for all good mail on both machines several times. Can't find a way to select Not Spam. 3) Windows 11 on desktop & Windows 10 on Laptop. Still no improvement and most mail going to Spam. Would it help to turn off Sync? Any help or ideas would be greatly appreciated as I would really like to stay with Thunderbird if I can. Currently I am checking my Spam folder before the Inbox.