Filter by Product Type to get more specific product results. Filter products based on envelope type (e.g., standard, postcard, international, etc.).

Shop for Mailing Supplies in Office Supplies. Buy products such as USPS Forever Stamps, Book of 20 at Walmart and save.

Filter by Product Type to get more specific product results. Filter products based on envelope type (e.g., standard, postcard, international, etc.).

Northern Cardinal Forever #10 Stamped Envelopes (PSA) Pressure Sensitive Adhesive 4-1/8" (L) x 9-1/2" (W) $5.05 - $450.10

2 days ago · Learn how to select the right type and number of stamps for an envelope with our comprehensive guide on postage options.

First-Class Mail is a fast, low-cost way to send envelopes and postcards. See First-Class Mail and Forever stamp prices for a letter and postcard.

Order stamps, shipping supplies, and unique items only available from the United States Postal Service.