Re: how do i log out of my yahoo account on my mobile
Hello. Welcome to Android Central.
You can't log out of an email app using IMAP, AFAIK.
You can have a screen lock, get an app locker on Play Store, or log in to Yahoo in a browser and log out there if it's critical. You would have to not allow password saves for that site.
I use the Yahoo app, Yahoo on Gmail and Outlook.
I stand to be corrected in that there may be better options, but this has come up before and the consensus was you cannot. That's what a screen lock is generally for, but if you have a second user on the device I think an app locker will work on an email /client app.
Pick the one with the highest downloads and ratings.