As more mailers begin making the transition to Intelligent Mail®, one of the first tasks they are faced with is creating an account on the USPS® Business Customer Gateway so they can access the PostalOne! system. As part of that process, mailers must apply for Mailer Identification Numbers, or MID's, and Customer Registration Identification Numbers, or CRID's. There can be a lot of mystery and confusion surrounding both of these terms, so let's unravel the mystery. Read more!
