This guide explains how to add an email address to your blacklist and whitelist.
- Log in to the client area
- Navigate to Plesk (click for guide).
- Click the 'Mail' tab.
- Click 'Mail accounts'.

- Click the hyperlink for your email address (john@example.com)

- Click 'Spam filter'.
- Click 'Show Advanced Settings'.

- You will see a box for the whitelist and another box for the blacklist.