I think I have two issues: 1: When I tried to send an e-mail to seller on Craigslist, the auto-populate used an old, obsolete e-mail address. I do have things saved from that e-mail, but I went into address book and deleted that address and also went into Firefox setting to autofill, though it only had home address not e-mail address. I also went to Firefox to delete something else that the internet said to delete so autofill would stop with old address. Problem 2: In my Thunderbird e-mail I do have three e-mails that show, one for normal, one for junk, and the old one. The old one has a yellow star by it. I have old emails I like to look back on but maybe it would just be easier to delete the whole thing. Because when I tried to send an email to the seller, it still populated the old address (though I changed the name on the card, thinking I could fool it). So now in just has the word discontinued in the TO: line. I would like to keep this old e-mail information, but ditch the e-mail address and make my g-mail the default. I didn't know how to do that. I'm assuming that's what the star is in the tree by the three email addresses (the yellow star is on the obsolete e-mail, which I assume is why it auto populates that one). Is there a way to ditch that e-mail address of gunnyandburlap but keep the e-mails in that account? And what did I not do right to get it out of the auto-fill on the TO: line of the new e-mail I tried to send? I thought I was doing well to delete it from all my address books, but that didn't do it. I would appreciate any help you could give me. I do better if you give me a 1. 2. 3. approach, as I'm old. Thank you. N.H.