How thick can a USPS padded envelope be?

3/4 inch
Large envelopes as well as padded mailing bags must be somewhat flexible (not rigid) and uniformly thick. Items mailed in large envelopes cannot have more than a 1/4 inch variance in thickness. Also, mailpieces must be rectangular with a maximum thickness (at the thickest point) of 3/4 inch.

How thick can a letter be with a forever stamp?

To be eligible for mailing at the price for letters, a piece must be: Rectangular. At least 3-1/2 inches high x 5 inches long x 0.007 inch thick. No more than 6-1/8 inches high x 11-1/2 inches long x 1/4 inch thick.

How thick can letters be for USPS?

For a mailpiece to be eligible for First-Class Mail letter rates, it must be at least 3-1/2 inches by 5 inches by 0.007-inch thick, and no more than 6-1/8 inches by 11–1/2 inches by 1/4-inch thick. If the mailpiece falls within these dimensions, it is classified as a letter.

Can you mail lumpy envelope?

Any unusual lumps or thickness up to the quarter inch make it a non-machineable letter or a flat (large envelope) if it exceeds 1/4 inch.

How do I mail a thick envelope?

Enter the weight of your Large Envelope or Flat. If your Large Envelope or Flat weighs 13 ounces or less it can be sent by First Class Mail. Tracking is not available with First Class Mail. If your Large Envelope or Flat weighs 14 ounces or more it can be sent by Priority Mail.

Are bubble mailers considered large Envelopes?

A mailpiece must be flat-size or larger, if rigid, or over 3/4″ thick to be classified and priced as a package (parcel). For padded bags (e.g., ReadyPost ® “cushion mailer”), when the thickness is 3/4″ or less and the item is flat-size and somewhat flexible, the item should be classified and priced as a large envelope.

Is a bubble mailer an envelope or a package?

Bubble mailers are thin, padded envelopes that come in various sizes and cost less to ship. They still offer protection to your item but without the bulk and higher shipping costs of a box. Bubble mailers can be confusing to ship, whether because of postage, weight limits, or packaging procedures.

How thick can an envelope be to mail?

To be eligible for mailing at the price for letters, a letter must be: Rectangular. At least 3½ inches high x 5 inches long x 0.007 inch thick. No more than 6⅛ inches high x 11½ inches long x ¼ inch thick.

What does USPS consider a thick envelope?

The words large envelopes and flats are used interchangeably. Whatever you call them, flats must: Have one dimension that is greater than 6-1/8 inches high OR 11-½ inches long OR ¼ inch thick. Be no more than 12 inches high x 15 inches long x ¾ inch thick….Sizes for Large Envelopes and Flats.

Dimension	Minimum*	Maximum
Thickness	1/4 inch	3/4 inch

What happens if an envelope is too thick?

If you are mailing overstuffed letters or home-made cards, be aware there is a limitation on the thickness of the envelope. Not only can these make your letter thickness uneven, they can cause a paper envelope to tear and drop its contents and are therefore sometimes considered unmailable.

How thick can an envelope be?

Length + girth (distance around the thickest part of the package) cannot exceed 130 inches. Letters: maximum thickness 1/4 inch. Large Envelopes: maximum thickness 3/4 inch.

Is a bubble mailer a large envelope?