Are you allowed to mail a poofy envelope

What a fun question!

In general, the United States Postal Service (USPS) allows mailing of envelopes with unusual shapes, sizes, and materials, as long as they meet certain requirements. Here are some guidelines:

  1. Size: Envelopes must be rectangular in shape and meet the USPS's minimum and maximum dimensions for letters and flats. For letters, the maximum size is 11.5 inches long, 6.125 inches high, and 0.25 inches thick. For flats, the maximum size is 13 inches long, 15.5 inches high, and 0.75 inches thick.
  2. Weight: Envelopes must not exceed 3.5 ounces in weight for First-Class Mail and 13 ounces for Priority Mail.
  3. Material: Envelopes can be made of various materials, including paper, cardboard, or even fabric. However, they must be sturdy enough to withstand handling and processing.
  4. Sealing: Envelopes must be sealed securely to prevent contents from spilling out during transit.
  5. Addressing: Envelopes must have a valid address and postage affixed.

As for poofy envelopes, which are often made of lightweight, flexible materials like tissue paper or fabric, they may be allowed as long as they meet the above requirements. However, there are some considerations:

If you plan to mail a poofy envelope, it's a good idea to check with your local post office or the USPS website for specific guidance on mailing unusual items. They may have additional requirements or restrictions that apply to your specific envelope.