EDDM Full Service means that we will print your EDDM-size pieces, bundle them, and mail them to your selected mailing routes. EDDM print only means we will only print your EDDM pieces. We can optionally bundle them for you as well. You will then be responsible for taking them to the post office and sorting out the mailing with them. For inquiries, please contact our support team at the link below. Contact Support Team at Support@4over4.com