The following are the steps for blocking an email address in AOL:
Step 1: The first step to block an email address is to Log-in to your AOL box.
Step 2: After Log-in to your AOL box click the Options button situated under your user name.
Step 3: After clicking the Options button click “Mail Settings”.
Step 4: After clicking “Mail Settings” click on Spam Setting then in the sender Filter option click on the drop down menu and then Select Block mail from addresses I specify.
Step 5: After clicking the Spam settings type the Email Address for which you want to block and then click on + Button to address Email address in the Filter List.
Step 6: Now the Email address has been added to the Filter List and then click on save the setting.