Step-1
Open https://login.yahoo.com.
Step-2
Enter your Yahoo email and password to sign in.
Step-1
Click your profile name and choose “Manage your Account”.
Step-2
From the upper-hand menu, click Security.
Step-3
Scroll down to Two-step verification and toggle it on.
Step-4
Enter your mobile phone number to receive a verification code.
Step-5
Enter the code sent to your phone and click Next.
Step-1
In the Account Security page, scroll down to App passwords.
Step-2
Click Create app password.
Step-3
Enter a name for your app (for example, “Yahoo Mail”) and click Generate Password.
Step-4
Yahoo will display a unique app password. Copy it carefully: you will only see it once.
Step-1
Step-1
Return to Security → App passwords in your Yahoo account.
Step-2
To remove access, click Delete on the app password.
Note: All app passwords are revoked automatically if you change your main Yahoo password.