is there any mailing services in the US that works on sundays?

Topic says it all, whether it be UPS, FedEx, or just the good old USPS, any of them work on sundays? I recently ordered something from amazon.com, and was just curious at the email, in which the estimated mailing date was a sunday.

Your answers appreciated.

USPS does it for express mail
http://www.usps.com/shipping/expressmail.htm

As Joey P’s link says, the US Postal Service will deliver Express Mail 365 days a year (even Christmas Day!).

What many people do not realize is that there are several Post Offices that are open for normal business on Sundays. I have frequently used the one in the basement of Macy’s department store on Union Square in San Francisco (Post Office open 11am-5pm every Sunday).

I believe that there are several Post Offices in the US (near major airports) that are open 24 hours a day, 7 days a week, but can’t provide a cite right now.

Yes special delivery costs more but they deliver all days. Naperville and Chicago in Illinois have Sunday hours.

The airport post office in Milwaukee is open 24 hours a day, 7 days a week 365 days a year. I use it quite often. It’s also really nice becuse if you take your mail there it get’s to it’s destination at least a day sooner. (If you take it within (this is a guess) a 50 mile radius it will get to the airport post office tomarrow, and then go from there).

Likewise, the post office near Los Angeles International Airport is open 365 days a year, 24 hours a day, for all services. I actually applied for my passport there at 1:00am. (no lines!)