• How to add an email address (or a whole domain) to your Blocked Addresses list.
  
• How to remove an address or domain from your Blocked Addresses list.

If you don't want to receive email from a certain email address or domain, you can block it in Yahoo! Mail. Incoming mail from Blocked Addresses is automatically deleted and doesn't bounce back to the sender. Also, note that if you change your mind, you can unblock an address.

Note: In order to make changes to your Spam functions or adding a blocked address, you will need to use a desktop computer (Mac or PC).

To block an email address:

1. Click the gear icon () in the upper-right corner of the window, and select Mail Options from the menu that appears. (In Mail Classic, select Options | Mail Options.)
2. In the left pane, select Blocked Addresses.
3. In the Add an address field, type the email address of the person from whom you don't want to receive mail.
   • To block a domain: Enter just the domain name in the "Add an address" field. For example, to block emails from all @sample.com addresses, enter "sample.com".
4. Click the "+" (plus sign) button at the right of the list.

The address (or domain) is added to your list of blocked addresses.

With Yahoo! Mail, you can block up to 500 email addresses. You can see how many addresses you've blocked to the left of the list, for example, "4 of 500 used."

Sometimes, you’ll want to unblock an email address you had previously blocked. For example, you may want to unblock your niece who used to spam you who has finally grown up.

To unblock an email address:

1. Click the gear icon () in the upper-right corner of the window, and select Mail Options from the menu that appears. (In Mail Classic, select Options | Mail Options.)
2. In the left pane, select Blocked Addresses.
3. In the Blocked addresses list, select the address you wish to receive email from again.
4. Click the trash can button at the right of the list.

The address is now removed from your list of blocked email addresses.

If you have tried adding or removing an address from your blocked list using the instructions above and it didn't work, please see this article.