The USPS wants the 2-letter state abbreviation, not the spelled-out state name. Eg., "MD," not "Maryland." Constant Contact (CC) replaced all of my 2-letter state info with the full names. In addition to using CC for email, I use exported CC data for mailing. Why on earth did you wipe out all of my 2-letter state codes, replacing them with full names? This is completely contrary to USPS guidelines.