I love Thunderbird, I think it is an excellent product all round, but one thing that really, really niggles me is that it continually marks certain senders as junk. I receive Emails from these senders all the time, and often miss Emails because Thunderbird has marked them as junk, and moved them to the Junk folder, which means I don't see them on my mobile devices (IMAP). I've marked this sender as "Not Junk" at least a thousand times. Each time it accepts my tag, and moves the Email back to the Inbox. However, that doesn't last, as the next Email, or the one after, or the one after that, ends up in Junk again. I've seen a few posts that protest - this is not Thunderbird's fault, it's your Email provider, but I've already crossed that one off the list as I have white listed the entire domain at the Email provider. So nothing is getting flagged from the Email provider, to hint that it might be junk. I'm always on the latest version of Thunderbird, and I have adaptive junk filter logging enabled, but it is completely empty of any logs. I also have "Do not automatically mark mail as junk if the sender is in "collected addresses" & "personal address book". I have a number of entries from this domain in the personal address book, as well as *.@domain-name.com, though I'm not sure if that format is correct to capture the entire domain. Any help on this matter, gratefully received. M