These messages are order receipts from places like Amazon, Papa John's, NewEgg, etc. No matter how many times I've told Thunderbird that these messages are not junk, the software continues to mark them as such and move them to the quarantine folder. I've searched the forums and seen that there are a few people with this issue and they have been blown off by other users saying that they're using IMAP and the problem is their provider marking the messages as Spam. Well: 1) I am using IMAP, but notice that I did not use the word Spam, I said that TB is marking them as Junk 2) I am the provider. I originally checked to make sure Spamassassin wasn't the problem, even though the messages did not score high enough to force SA to alter the subject and add the word "SPAM". Then, just to take SA out of the equation entirely, I white listed the addresses/domains on the server. Now, these emails bypass SA and Clam all together, but TB is still marking them as Junk. I have told TB numerous times that they are not Junk; I have added the from and reply-to addresses to TB's address book and told TB to not mark messages from these addresses as Junk. No joy though; TB continues to mark them as such. Maybe this is actually an issue that can't be blamed on someone else.