Publication 417, Nonprofit USPS Marketing Mail Eligibility: Nonprofit and Other Qualified Organizations > 4 Qualified Mailings > 4-3 Individual Mailings > 4-3.2 Identification of Mailpieces
All matter mailed at the nonprofit prices must identify the authorized organization. The authorized organization ‘ name and return address must appear in at least one of two places:
Note: If a return address is included on the mailpiece, it must be a complete return address of the authorized nonprofit organization. (See CSR PS-140.)
Organizations may mail using a d.b.a. (doing business as) or a.k.a. (also known as) name if the name is shown on the authorization to mail at the nonprofit prices.
If an organization that is currently authorized to mail at nonprofit prices requests to have the name on the authorization changed to a d.b.a or a.k.a. name, the Postal Service requires a copy of the certificate from the state that recognizes the use of the d.b.a. or a.k.a. name and a letter from the organization requesting a name change to the d.b.a. or a.k.a. name.
Alternately, the organization may maintain its authorization in its incorporated name and obtain a separate authorization to mail at nonprofit prices in its d.b.a. or a.k.a. name. An organization that is not currently authorized to mail at nonprofit prices may request authorization under a d.b.a. or a.k.a. name. To do so, the organization must file a PS Form 3624 in the d.b.a. or a.k.a. name. The application must include the following:
A return address is required on the outside of the mailpiece when postage is paid by precanceled adhesive stamps or a company permit imprint.