How to Create App Password in Yahoo Mail
App Password creation instructions for accessing Yahoo Mail while using Email Backup on Mac
Follow the simple procedure to generate app password –
Log in to Yahoo Account
Go to Account info as shown here.
Then click on Account security and Generate App Password.
Here Enter the name of the app which you are using i.e., MacUncle, and click on generate.
Now, copy the so created 16-digit password.