Can an envelope be mailed 2 inches thick

What an interesting question!

According to the United States Postal Service (USPS) guidelines, there are some limitations on the thickness of an envelope that can be mailed. The USPS has specific requirements for the maximum thickness of an envelope, which is typically measured in the "thickness" or "girth" of the envelope.

The USPS defines the girth of an envelope as the distance around the envelope, measured parallel to the length of the envelope. The maximum girth for a standard letter-sized envelope (11.5 inches long x 6.125 inches high x 0.007 inches thick) is 13 inches.

As for the thickness, the USPS allows envelopes to be up to 1/4 inch (0.25 inches) thick. This means that an envelope with a thickness of 2 inches would exceed the maximum allowed thickness by a significant margin.

In general, envelopes that are thicker than 1/4 inch may be considered "package-like" and may require additional postage, special handling, and may even be subject to additional fees.

If you need to mail an envelope that is 2 inches thick, you may want to consider the following options:

  1. Use a larger envelope or package: If the contents of the envelope are bulky or require extra protection, you may want to consider using a larger envelope or package that can accommodate the thickness.
  2. Use a specialized mailing service: Some companies offer specialized mailing services that can handle thicker or heavier items. These services may require additional postage and handling fees.
  3. Consider alternative shipping methods: If the item is too large or heavy for standard mail, you may want to consider using a shipping service like UPS or FedEx, which may be better equipped to handle larger or heavier items.

In summary, while it is technically possible to mail an envelope that is 2 inches thick, it may not be the most practical or cost-effective option. It's always a good idea to check with the USPS or a shipping service to determine the best way to mail your item.