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USPS Recipient Mailing Guidelines

If submitting forms for Print services, be mindful of USPS guidelines.

• Post Office Box addresses cannot contain any other data—such data — such as Department or Floor—on Floor — on the same line.
• Apartment / Department / Floor / Suite data must be entered in the "Address Apt/Suite" field of your import file. If this data is included in the "Address Deliv/Street" field, it may be dropped per the USPS.
• If data is entered in the "Address Apt/Suite" field, it prints immediately ABOVE the "Address Deliv/Street" field per USPS guidelines (reference https://pe.usps.com/text/pub28/28c2_003.htm#ep526273). For example:  

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