How do I fix the inconsistent connection with Yahoo mail?
I am having the same issue with the AOL server. I can send emails from AOL and Yahoo Mail but I can’t receive emails within the IOS Mail app. I can send and receive mail from the Yahoo Mail app.
Could be several things, try this first...
It may just need an App Password separate from the gMail password…
Yahoo has gone to this too...
https://help.yahoo.com/kb/access-yahoo-mail-third-party-apps-sln15241.html
Yahoo App password…
Generate and manage third-party app passwords
Some older, third-party email apps (that do not use our Yahoo branded sign in page) require you to enter a single password for login credentials. To access your Yahoo Mail account on these apps, you'll need to generate and use an app password. An app password is a long, randomly generated code that gives a non-Yahoo app permission to access your Yahoo account. You’ll only need to provide this code once to sign in to your third-party email app.
https://help.yahoo.com/kb/access-yahoo-mail-third-party-apps-sln15241.html
Issue connecting to Yahoo email server
