Just wondering, but whenever something gets mailed out (like the coupons) and it needs additional postage, isnt it supposed to come back to the sender for extra postage? At least thats what I've always thought and it has happened to me. I think I had gotten 2 back so far requiring extra postage, so I would put the extra on there and send it back out. However, klineyqueen PMed me and told me she keeps getting envie's from me that says postage due, but I never got it back

I also dont get why it needs additional postage. I always weigh them using my scale I got from the post office, put in the weight on the USPS website and get the amount and then I put that amount on my envie's. I've always thought everyone was getting them OK without the extra postage due written on them.
They do not always send it back. Alot of the time I was told by my post office was that they will try and see if the person getting any mail with postage due will pay for it first. This way here their is no cost involed in sending it back. due to the fact they need to keep track of it.
lso the thinkness of you envie could be a factor in it. I always take mu=ine to the post office and they check to see how thick it is. If it think they need to add postage