USPS Bulk Mail Form - msun 2026

1. Click ‘Get Form’ to open it in the editor.
2. Begin by filling out the Mailer and Mailing sections on pages 1 and 2. For any sections that do not apply, simply enter 'N/A'.
3. Complete the Postage section for applicable categories. Enter the number of pieces at each presort level in section B or E, then multiply by the corresponding postage price.
4. Add up the postage amounts from the relevant lines and enter the subtotal for Part B or E. Round off totals as specified.
5. If applicable, complete the Postage Affixed line by checking the appropriate box and calculating the total. Subtract this from Total Postage to find Net Postage.
6. Finally, read and sign the Certification section, ensuring to include your telephone number.

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