My wife has a Mac and has had this problem for 3 weeks. Your website does not help nor does it address her problem for a Mac. Thank God I have a computer. Two weeks ago when my wife would go to Thunderbird to read her emails, she began to get a message saying that she needed to sign in to pop-server.wi.rr.com. She would but it would say that she had the wrong password. We used the password that we had 1) written down, 2) the Mac Keychain password and 3) the TB>Preferences>Passwords>Saved Passwords; they were all the same but it did not work. The Pop-Server message would say that that password was incorrect. Extremely aggravating!!!!! What gives? What prompted this message? We used several other passwords but, of course, they did not help either. We went to your Help Section, but that has been a huge waste of time. Almost all answers were for PC's, not even close to helping us with a Mac. Read on the Help Site that we should erase the password in the TB Preference Password section, restart the software (we restarted the computer), it would prompt us for a new password, but that did not work either. All it did was to erase the password stored in her computer for Thunderbird. We did read that we should start a new account. We tried this, but it will not let us because another one exists with her email name; no s##t Sherlock! There are a great many emails that we would have to copy and paste to cancel this account, but that should not be the answer to this "pop-server" issue! My wife has started a home business and has 2 weeks worth of emails hung up in your system. I understand that you have limited resources, but it has been a very aggregating situation and your website Support has been weak, at best. I have read and tried all the website material that I can stand and getting no where. I need someone to speak with on the telephone, a real live person. Could you please send me a telephone number so that I may get a technician on line and get this problem solved. We really like Thunderbird, especially for its uncluttered appearance and ease of use, but you have to do something about the kind of tech support you have. We do not want to go to another service (yet), so we would like your help in getting this matter fixed and put behind us. Thank you and most sincerely, Dave Rust