Thanks a lot for volunteering! I have been using Thunderbird for years, and recently added another account. In my other 2 accounts, emails come into the Inbox marked in bold, I click on them to read and/or respond, and they are no longer bolded in my inbox. THis is great. However, with the new/3rd account, I'm having an irritating different experience: emails come into Inbox bolded; if I simply click on them and read them, we're good, and they are no longer bolded. But, if I reply to them, all of a sudden the message is bolded again in my Inbox. I've tried to compare all the settings on my 2 older accounts with the new account, and can't find any differences. Anyone know why this bolding after I reply in the new/3rd account might be happening? Thanks!