Whether you’re using a box, padded envelope, or tube, use packaging that doesn't bulge and is strong enough to protect what you’re sending. And accurately measure the size and weight of …

Pack of 10 or 25 9-7/16" (L) x 6-7/16" (W) x 2-3/16" (H) $0.00 Priority Mail Express® Cold Chain Packaging Pack of 3 13-15/16" (L) x 11-3/4" (W) x 12-1/16" (H) $48.00

Pack of 10 or 25 9-7/16" (L) x 6-7/16" (W) x 2-3/16" (H) $0.00 Priority Mail Express® Cold Chain Packaging Pack of 3 13-15/16" (L) x 11-3/4" (W) x 12-1/16" (H) $48.00

Refer to 339.4. At least one surface of the outer packaging must have a minimum dimension of 3.9 inches by 3.9 inches (100 mm by 100 mm) as required by 49 CFR § 173.199. The outer …

Lower maximum size standards may apply to mail addressed to some APOs, FPOs, and DPOs. The maximum size of a parcel bound for an international destination varies based on country.

While you are not required to use the free packaging for these services, you must use the USPS-produced address label provided by the Post Office for Priority Mail Express.

Jul 10, 2022 · Expedited packaging supplies are shipped via USPS Ground Advantage® service, arriving within 2-5 business days based on distance at no cost to the customer. For your …

Pens, pencils, key rings, bottle caps, and other similar odd-shaped items are not permitted in letter-size or flat-size paper envelopes unless they are wrapped within the other contents of …

May 13, 2025 · Beginning Monday, May 12, USPS will introduce a smaller Priority Mail Express product to allow customers to ship these jewelry and keepsake items in a box more suitable to …

Send Letters & Cards Learn how to choose the best envelope or card size, follow Postal addressing standards, and get stamps for your mail.