Can't connect yahoo mail to system mail app

Problem description: Can't connect yahoo mail to system mail app

Solution:

Issue is not related with DUT. The problem occurs because Yahoo policy. User need to use "Generate third-party app password" option to login:

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/frontier/create-password-sln15241.html?redirect=true