SUMMARY *** For login on Yahoo there is a need for Oauth2. If I register a new Mail instead of Oauth2 Google is set as authenticator. But I do not have a Google account. *** STEPS TO REPRODUCE 1. Add a Yahoo Mail address OBSERVED RESULT Redirected to Google EXPECTED RESULT Open Oauth2 Webpage on Yahoo SOFTWARE/OS VERSIONS Operating System: Manjaro Linux KDE Plasma Version: 5.24.5 KDE Frameworks Version: 5.94.0 Qt Version: 5.15.4 Kernel Version: 5.15.41-1-MANJARO (64-bit) Graphics Platform: X11 Processors: 12 × Intel® Xeon® CPU E5-1650 v3 @ 3.50GHz Memory: 31.3 GiB of RAM ADDITIONAL INFORMATION Thunderbird work without Problems -> oauth://login.yahoo.com
I have the same issue with AOL (and it would be the same with Verizon)
So the issue here is that KMail cannot be used with mail providers that rely on OAuth, except Gmail. This is at least Yahoo, Aol and (from what I read on the internet) Verizon.
This bug is a duplicate of https://bugs.kde.org/show_bug.cgi?id=444301 https://bugs.kde.org/show_bug.cgi?id=462042
There's a more generic bug about the issue. *** This bug has been marked as a duplicate of bug 457233 ***