Has it stopped getting mail? If not you don't need to do anything.

It has stopped getting mail. There must be a way to change my password on Thunderbird...?

How o you change password on a Thunderbird account? Please tell me. Thanks.

https://support.mozilla.org/en-US/kb/password-manager-remember-delete-change-tb

I got sent a link to "allow Thunderbird to access Yahoo mail." That solved the problem on that computer. But I can't get it to work on another computer. I need to make this change on 4 computers altogether. Please help. BTW it said Yahoo Mail Read and Write. Only the Read part really works. You can write, but not Send what you write.

I got sent a link to "allow Thunderbird to access Yahoo mail." That solved the problem on that computer. But I can't get it to work on another computer. I need to make this change on 4 computers altogether. Please help. BTW it said Yahoo Mail Read and Write. Only the Read part really works. You can write, but not Send what you write.