Additional Entry permits for authorized Periodicals publications can be opened in PostalOne! by providing the mailing Post Office with the publications‘s USPS Publication Number. If the Mail Anywhere Program is used, no additional account is needed.
Publishers who wish to present authorized Periodicals publications for verification at additional mailing offices without access to PostalOne! must file PS Form 3510-M at the office serving the KOP, indicating that mailings will be presented at these offices.