Mail A Letter Apr 2026

If your letter is heavier than 1 ounce, rigid, or lumpy (containing items like coins), it may require a non-machinable surcharge or additional stamps.

Use a ballpoint pen with dark ink and avoid writing across seams or tape. 3. Apply Correct Postage MAIL A LETTER

Include your own full name and address in the top-left corner. This ensures the letter can be returned if it cannot be delivered. If your letter is heavier than 1 ounce,

For a standard envelope weighing under 1 ounce, one USPS Forever Stamp is typically sufficient for domestic mail in the U.S.. or lumpy (containing items like coins)