Let me start out by saying: CAUTION CAUTION CAUTION. Applying an Ancillary Service Endorsement like RETURN SERVICE REQUESTED or ADDRESS SERVICE REQUESTED to the face of your mailpiece may seem like an easy way to make your mailing Move Update-compliant. But it may also be the easy way for you to experience increased postage costs and expose your company to what the USPS calls "Revenue Deficiency Assessments" and the rest of the industry refers to as postage penalties.

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