How to block sender in mac mail

To block a sender in Mac Mail, you can follow these steps:

1. Open Mac Mail and go to the "Mail" menu.
2. Select "Preferences" from the drop-down menu.
3. Click on the "Accounts" tab.
4. Select the account you want to block the sender from.
5. Click on the "Block" button next to the "Sender" field.
6. Enter the email address of the sender you want to block in the "Block" field.
7. Click "OK" to save the changes.

Alternatively, you can also block a sender by right-clicking (or control-clicking) on an email message from the sender and selecting "Block This Sender" from the context menu.

Note: Blocking a sender will prevent them from sending you emails, but it will not delete any emails they have already sent you.