Most UPS Stores are closed on Sunday, but self-service UPS Drop Boxes found in more than 40,000 locations throughout the country are available 24 hours a day, every day. There are a few stores that are open, and the UPS website contains a list of them. Still, an open store on Sunday shouldn't be confused with a regular delivery day as UPS does not make deliveries on Sunday.
UPS also operates with retail chains such as Staples and Office Depot. If these alliance locations are open on Sunday, as most are, then their UPS centers are also. The same applies to nationwide UPS authorized shipping outlets, such as Mail Box Plus.
UPS Access Points, which are UPS-affiliated retail locations that accommodate package delivery near a person's home or job, may hold a package for a customer to collect on Sunday, provided they're open.