Mail flat

I think you meant "mail flat" as in "mail flat rate"!

A flat rate is a shipping rate that is the same regardless of the weight or size of the package. In other words, you pay a fixed amount to send a package, regardless of how much it weighs or how big it is.

In the United States, the United States Postal Service (USPS) offers a flat rate shipping service for packages that weigh up to 70 pounds. This service is called "Flat Rate Shipping" and it's available for both domestic and international shipping.

Here are some benefits of using flat rate shipping:

  1. Simplified pricing: You don't have to worry about calculating the weight or dimensions of your package to determine the shipping cost.
  2. Cost-effective: Flat rate shipping can be more cost-effective than calculating the actual weight and dimensions of your package.
  3. Convenience: You can simply use a flat rate box or envelope and pay a fixed rate for shipping.

Some common flat rate shipping options include:

Keep in mind that there may be some limitations and restrictions on using flat rate shipping, such as package size and weight limits, and specific items that are not eligible for flat rate shipping. It's always a good idea to check with the USPS or other shipping carriers for more information on their flat rate shipping options and policies.