“How do I block an email address in Yahoo Mail?”
1. Sign into your Yahoo Mail account.
2. Click on the ‘Options’.
3. Select ‘Mail Options’ from the drop-down menu.
4. Go to the left-hand side, under Advanced Options click on ‘Blocked Addresses’.
5. Enter the email address you want to block and click on the ‘+’ icon.
6. The email address is now added to your list of blocked email addresses. You can block up to 500 email addresses.
Emails will be deleted before it reaches your Inbox and the sender will not be notified that the email was not delivered.