Always something that I thought about doing and want to get your take on it. I mean all my bills credit cards, loans, etc all come with a return mailing envelope. Do you guys send a return envelope with all your bills? I obviously wouldn't put postage on them that would get a bit costly. My bills are setup with a tear-off portion to return on the bottom (I buy special perforated paper for my bills), they would just need fixed a bit to get addresses to show through the envelopes. Who does it? Is it worth doing?