I don't remember if I heard this somewhere, or if it's just an old fashioned thing, but I just wanted to find out if I need to sort my invitations by zip code or whatever before brining them to the post office. Thanks.
No, you don't need to sort by zip code....but I would let a postal worker take a look at the actual piece of mail and weigh it. They will sometimes have to charge extra for heavy items or those that need to be hand-processed so that they don't get ruined by the machinery. My invitations had a metal embellishment that required it to be hand-posted so that the metal didn't tear the envelope if it went through the machine poster.