my email address does not exist. centurylink my provider, elliminated q.com, i need to change to yahoo address. help!!

- Assuming you have your old, non-working q.com account is still set up in Thunderbird, you should copy or move any messages you want to keep into Local Folders. - You should create a brand new account in Thunderbird for your new Yahoo address. Do not try to change the old one to the new one. - When you're satisfied that the Yahoo account is working properly and you have transferred all the q.com messages to local folders, you can then delete the obsolete q.com account in Thunderbird. - Be sure to tell all your contacts about your new email address.