The Mail Design Professional (MDP) program teaches mailing industry personnel how to design mail to enhance its compatability with the US Postal Service automated equipment. It also coaches mailers on how to achieve lower postage prices through automation.
MDP training is 100% free to all users. However, USPS MDP Certification is only available upon successful completion of course assessment, which does have a $95 fee. Participants wishing to take the certification must choose the option during the NPF registration process.