Publication 417, Nonprofit USPS Marketing Mail Eligibility: Nonprofit and Other Qualified Organizations > 3 Application for Authorization
3 Application for Authorization
3-1 Original Mailing Office
3-1.1 General
3-1.2 Completing PS Form 3624
3-1.3 General Documentation Requirements
3-1.4 Additional Documents Concerning Operation
3-1.5 Qualified Political Committees and Voting Registration Officials
3-1.6 Submitting Application
3-1.6.1 Where to File
3-1.6.2 Review Process
3-1.6.3 Refund for Mailings While Application Pending
3-1.7 Appealing Denied Application
3-1.7.1 Notification
3-1.7.2 Appeal Letter
3-1.7.3 Final Decision
3-2 Additional Mailing Offices
3-2.1 General
3-2.2 Confirmation of Authorization
3-2.2.1 PS Form 3623
3-2.2.2 Organization Name
3-2.2.3 Mailing While Application Pending
3-3 Mailing After Authorization
3-3.1 Mailing Frequency and Revocation for Nonuse