Do rpyal mail deliver on sundays

In the United States, the United States Postal Service (USPS) does not deliver mail on Sundays, except for Priority Mail Express and certain packages.

According to the USPS website, their regular mail delivery schedule is:

Priority Mail Express is a special service that guarantees overnight delivery, and it is the only mail service that is delivered on Sundays. This service is available for an additional fee.

It's worth noting that some private courier services, such as UPS and FedEx, may deliver packages on Sundays, but this is not a standard practice and may depend on the specific service and location.

If you're expecting a package or mail delivery on a Sunday, it's best to check with the sender or the USPS website to confirm whether it will be delivered.