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A Forever® stamp is for sending domestic mail weighing up to 1 oz via First-Class Mail®.
Purpose: Send letters and cards up to 1 oz (approximately 4 sheets of regular, 8-1/2" x 11" paper in a rectangular envelope)
within the U.S., including U.S. territories and military bases overseas.
Value: Always valid for the First-Class Mail 1 oz rate, even if postage rates increase. Visit First-Class Mail and Postage to view
current rates.
Other Uses: Pair this stamp’s value with other postage to meet mailing costs when additional postage is required.

Use the Retail Postage Calculator to determine the exact cost of your mail.

• It does not mean that the stamp has expired;
• It does not mean that you cannot continue to use it;
• Nor a postmark;
• It's just an artificial anti-copying line added to the display image.

• Forever Stamp: Valid for standard domestic letters within the U.S. These stamps typically do not bear a fixed face value; they remain valid for mailing a standard one-ounce letter at the current rate, even if postage prices increase in the future.
• Global Forever Stamp:  Primarily used for standard international letters or postcards sent from the U.S. to other countries. The main difference between this and a standard Forever Stamp lies in its scope of use and postage value.
• Postcard Stamp: Designed specifically for domestic postcards that meet USPS size standards; the postage rate is typically lower than that for standard letters.
• Additional Ounce Stamp: Used to cover the cost of weight exceeding the first ounce; these are usually used in conjunction with a Forever Stamp or other stamps.
• Two-Ounce and Three-Ounce Stamps: Suitable for heavier letters, greeting cards, wedding invitations, or multi-page documents, eliminating the need to combine multiple stamps to cover the required postage.
• Fixed-Value Stamps: These stamps display a specific monetary value (e.g., 1¢, 5¢, or other amounts) and are primarily used to make up postage differences or in combination with other stamps.
• Commemorative and Thematic Stamps: Typically issued to mark historical events, cultural or artistic themes, holidays, notable figures, animals, or natural landscapes. While suitable for regular mail, these stamps are also popular among collectors due to their unique designs and limited release periods.