Custom Postage Paid Stamp - EDDM - ECRWSS - Presorted Postage Stamp - Local Postal Customer Stamp Custom Postage Paid Stamp - EDDM - ECRWSS - Presorted Postage Stamp - Local Postal Customer Stamp After you place your order. Send us your cusotmization by clicking on "YOUR ORDERS" and then "CONTACT SELLER" Postage Paid Stamp is 1" x 1" and is a self-inking stamp that is perfect for rapid impressions. Stamp is ONLY available in BLACK ink due to the United State Postal Service guidelines. PLEASE NOTE: You must have an account with the USPS to use.