Yes, if an email from a sender is in your spam trap, you can click on that email address and select the desired action. To add an address when you do not have an email in your spam trap, you'll need to do the following:
1. Click on the Rules tab
2. Select the Senders tab
3. Enter the email address in the field provided
4. Click Add Rule and select the desired action.
5. Remember to click the Submit Changes button after making any changes to your Doteasy Email Protection preferences.
You can also refer to this tutorial: http://kb.doteasy.com/questions/362/How+do+I+set+Sender+rules%3F
5th of July, 2013