I also have this problem. I think this happens when Yahoo, Hotmail or whatever email provider makes a change to their webmail interface. Usually, it takes a few days before an update to the webmail plugin is released as a fix. Sometimes when it takes longer, I go hunting for a webmail beta. I think I'll try that now, since this has been happening for several days.
- Thunderbird Webmail Fails on Yahoo Mail BA
- Re: Thunderbird Webmail Fails on Yahoo Mail Mark
- Re: Thunderbird Webmail Fails on Yahoo Mail GDub
