Answer:
1. obtaining signed receipts for mail
2. sorting mail
3. delivering mail
Step-by-step explanation:
Postal Service Mail Carrier's main responsibility is to deliver mail to their intended receipts. The Postal Service mail carriers are the last people in the mail distribution channel. They are the people who get mail to the receipts and have them sign for it.
The Postal service mail carriers will be issued with mail, usually for a particular route. They will sort to identify the address where each mail is to be delivered. Upon arriving at the correct address, the postal service mail carrier will hand over the mail to the recipient and have them sign as an acknowledgment of receipt.