Originally Posted by JContracting
You've never needed them. If you're doing a max of 5000 postcards per day, you don't need the bulk permit and don't need the box.
According to the USPS all EDDM needs the proper address and indicia. Here is the fact sheet for eddm retail (under 5k pieces a day) it clearly states the the proper address box and postage indicia must be used. If there is a new update that I'm not aware of, by all means correct me.