Assuming that you mean one of the post office's public mail boxes (they are blue) that should be fine. Look on the door (the lever that pulls open / down) and just above it there should be a sticker that lists daily pick up times. With out looking I can't tell if what you put your requests is was actually for mail delivery, but you should be able to recognize one if it is.

I actually put most of my requests in a post office box right down my street. If you don't want to mail from home, you can deposit you requests in a box outside your local post office. Or, if all else fails, take it inside to the clerk.

One final note: you may not want to assume that you requests were lost. It sometimes happens that letters go unanswered. Also, I have had some successes that have taken over a year. So, sending one or two may have gotten no response, but they could still turn up... I never assume that I will have a 100% success rate. Remember patience is a virtue.

When I first started sending autograph requests, I would send them from my home mailbox. Its a pretty big mailbox, so autographs can fit inside it easily and not get bent.

A while back I dropped off a few autograph requests into one of those uhh... I don't know what to call them... The blue mail boxes that can be found in front of some stores and in front of post offices.

I never heard back from any of the ones that I dropped off into the big blue mailboxes, but all of the ones that I sent from my house have been a success.

Is there some rule about sending certain envelopes in the "public" mailboxes? A weight limit or something I missed? I don't collect autographs all the time or anything, just certain ones from actors that I really admire, so I really do not have a firm grasp on how all this works.

Another, sorta open question for you guys... How do YOU send autograph requests?