Postal Letter

What is the scripted date that the USPS puts on an average 44 cent stamped envelope?

My boss at work mails me checks but only come when I ask him for them. When I ask him when the check went out he says "Oh, last week". So, what date is the day that the USPS scripts onto the front of a typical one stamp envelope? Isn't that the day my boss put the envelope in the mailbox?

Public Comments

1. The date it was processed in the sorting office.
2. Mail from Collection boxes as well as any mail picked up from residential and business locations is taken in to the Processing facilities every afternoon/evening. It is processed through cancelling machinery with that date. A postmark is accepted as the legal date that the item was tendered to the USPS for carriage to a destination. So, if your boss says that he put your check in the mail last week, but the postmark shows a date of yesterday or the day before, that is the day that the USPS actually got the letter for delivery.
3. The mail processing centre