Follow these instructions for Gmail:
Step 1: In your Gmail inbox, locate an email from firstname.lastname@example.org (i.e., the email you received that prompted you to visit this page).
Step 2: Drag this email into the Primary tab of your inbox.
Step 3: Your emails from Peak Marketer will arrive in your Primary tab going forward.
For other email providers (Hotmail, Yahoo, etc.), please add email@example.com as a contact in your address book. Further instructions can be found here.