Thanks for the write up. I have been trying to get this to work for the last 5 hours. Could only find FAQ's, WIKI's and Forums that were old and using outdated settings and settings that are no longer available in the software or they are using Outlook, a few months old, or people saying "Same as me" or "Me too", which really doesn't help the issue. I then searched for the newest and found this entry. Made the changes (OAuth2), even brought that up to Yahoo support, and I was able to send emails.
When I reopened Thunderbird a rather big pop-up box from Yahoo opened and wanted verification that I wanted to use a 3rd Party email client and asked for my U/N and P/W.
One thing that is not brought up, that the Yahoo support had me try was the 3rd Party Email client or application password creation on Yahoo's security page. It creates a password for your application other that Yahoo's app, and support had me enter that password at one time also. I don't know if that has/had any effect on this issue.
I made the mistake of "testing" the transfer with my primary account email, and when you do that it automatically transfers any email addresses set up under that account.
THANK YOU for your write up. It most definitely helped this poor slob.
Tried this- didn't work. A useless window "inviting" me to establish a new account but I can no longer use Thunderbird. There doesn't seem to be a way for me to access my accounts any way besides Yahoo's interface.
Getting Cox to Thunderbird was indeed the hardest part. I had set up an App password but never had to use it..I changed SMTP aand IMAP settings in the TB Server settings to the Yahoo ones I am sure you have but the authoriztion OAuth2 does not show up in the drop down until you restart TB a couple of times. Yahoo is very slow so you have to let the servers have time to talk to one another. I have 4 email accounts that after a total of like 12 hours finally have all in TB and working (except of the Unified folder deleting does not delete off inbox until you empty trash).
I hope maybe this helps but check out my other questions and you might stumble upon something that helps.. getting into iPhone was a piece of cake compared to this.
Okay... retrying.
The OAuth2 no-show was one thing that befuddled me. What should I expect (errors) in the interim? Had to reset my Cox account as it was (did so successfully) but am back at square one with the TB transfer.
Bear in mind, all my accounts have been activated on Yahoo. The trick is to get TB and Yahoo to play nice. Yahoo wants to pop a window every time I launch TB disabling checking for messages erases that annoyance.
Thank you for the response.
Edit: now launching TB in turn pops the Yahoo window seeking credentials for webmail without TB seeking a password. Also- "authentication failure" No place in TB to enter new password The Yahoo popup when it attempts to "check for messages" is particularly goading. Grrr....
