When it comes to shipping, mail is loaded based on priority. As an example, when you have mail being loaded into a plane with limited space and weight allowance. ... Finally, all priority mail will be delivered just like all other mail is; by the mail carrier or put into your Post Office box.

Is priority mail delivered by regular mailman?

Priority is delivered like regular mail. If the Priority item fits in a mail box, and does not require a signature, it will be left with your other mail.

Is Priority mail sent by air?

Generally, Priority Mail, Priority Mail Express and First-Class Mail pieces will be shipped by air. However, these mail classes may also be shipped by ground depending on the originating and destination points—for example, if a destination is within driving distance.