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United States Postal Service (USPS) Information

The Postal Service publishes everything you want to know about all types of mail pieces and services on its Quick Services Guide web page.

  • Address Quality Standards;
  • Move Update Requirements;
  • Endorsements;
  • Postage Payments;
  • First Class Mail;
  • Periodicals;
  • Standard Mail;
  • Mail Piece Design;
  • Mail Preparation, Qualification and Standards;
  • Reply Mail; and
  • Special Services.

These guides are very user-friendly and provide detailed information about all USPS products and services.

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