This is off topic, but I'm curious what the deal is and you all are knowledgeable.  I just moved from a cubicle into an office so know I have a door key and my door key was issued to me with one of those metal tags that says if found drop in any mailbox with my work address on it.  Does that really work?

I just find it interesting that as the Post Office wants standard sizes and standard addressing and all these other things that make processing mail easier that they would even want to deal with random sets of keys.  How is postage charged for those anyway?

Thanks!

I think what happens (although this is just a guess) is that the company who prints that on those tags pays the postage when the tag shows up.  For example, say I have a tag for Safeway that says that, I think Safeway pays for it when the keys are delivered to them.  Then I'd guess they charge you to hand the keys over!