To participate in the bulk proof of delivery program, a mailer (or the mailer’s third-party designee) must receive the appropriate certification to print labels or send and/or receive files. Certification information for Confirmation Services is available in Publication 91. Information regarding label certification for all other extra services is covered in Publication 109. Certification for Express Mail Manifesting is included in Publication 97, Guide to Express Mail Manifesting. Many consolidators/vendors have already received certification for label printing and/or sending electronic files. If applicable, a mailer should check with its third-party designee to see if additional certification is required.
