500
Additional Services
503 Extra Services
Extra Services for Express Mail
Registered Mail
Certified Mail
Insured Mail
Certificate of Mailing
Return Receipt
Restricted Delivery
Return Receipt for Merchandise
Delivery Confirmation
Signature Confirmation
Collect on Delivery (COD)
Special Handling
Confirm
Money Orders
507 Mailer Services
Treatment of Mail
Forwarding
Address Correction Services
Recall of Mail
Pickup Service
Mailing List Services
Address Sequencing Services
Business Reply Mail (BRM)
Merchandise Return Service
Bulk Parcel Return Service
508 Recipient Services
Recipient Options
Conditions of Delivery
Customer Mail Receptacles
Post Office Box Service
Caller Service
General Delivery
Firm Holdout
Pandering Advertisements
Sexually Oriented Advertisements
509 Other Services
Address Information System Products
Nonpostal Services