I'm talking about as a shipping option on the listing. So it will display as a shipping option, just as USPS and UPS does, so I can select the way an item may be shipped. And the buyer has the options to select how they want the item shipped when purchasing.
Under Domestic Shipping Services, I can select:
UPS 2nd Day Air, UPS Ground, UPS Next Day Air, etc.
USPS Express Mail, UPS Priority Mail, UPS Small Flat Rate Box, etc.
The same for International Shipping Service:
UPS Standard, UPS Worldwide Express, etc.
USPS Priority Mail International, USPS Priority Mail International Flat Rate Envelope, etc.