Abbrevation of mail

Here are some common abbreviations related to mail:

1. USPS - United States Postal Service
2. PO - Post Office
3. P.O. Box - Post Office Box
4. ZIP - Zone Improvement Plan (used for postal codes)
5. APO - Army Post Office (for military mail)
6. FPO - Fleet Post Office (for military mail)
7. RPO - Rural Post Office
8. MPO - Metropolitan Post Office
9. POC - Point of Contact (used for mail delivery)
10. COD - Cash On Delivery (a payment method for mail delivery)

Let me know if you need more!