I had to change my Yahoo password today so no matter how many times I try, I can't get K-9 set up. It will continually tell me my user name or password is wrong. I have tried the old password and also the new and it will not set it up.
I do not know the settings for Yahoo mail to use the manual setup with K-9.
Perhaps someone can rescue me.
If I use the Verizon icon for Yahoo mail, I would be o.k. but do not want to delete from server when I delete from the device. K-9 worked until I changed the Yahoo password this morning.