Yahoo Email Accounts
Navigate to Account Settings > Email Settings.
Yahoo Settings: Yahoo requires this setting to be turned on, in order to sync their email accounts with outside applications:
- Sign in to Yahoo Mail.
- Go to your "Account security" settings.
- Turn on Allow apps that use less secure sign in.
Use the dropdown to select "Yahoo" and connect your email
Select "Other" from the dropdown and enter these settings, along with your email account's username/password: