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312 Bulk Quantities Certificate of Mailing - Postal Explorer - USPS

312 Bulk Quantities Certificate of Mailing - Postal Explorer - USPS 2026

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The document outlines the procedures and requirements for obtaining a Certificate of Bulk Mailing for international mail. It details the necessary postage payment methods, the conditions under which the certificate is applicable, and instructions for completing and submitting the PS Form 3606 at a Post Office. The certificate verifies the number of identical-weight mailpieces but does not confirm mailing to specific addresses or provide delivery records.

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Click ‘Get Form’ to open it in the editor.
Begin by affixing the appropriate postage in the designated area. You can use meter, PC Postage, or uncanceled postage stamps to cover the total fee due.
Fill in the 'Number of Identical Weight Pieces' and specify the 'Class of Mail' for your bulk mailing.
Indicate the 'Total Number of Pounds Mailed For' and calculate the 'Total Postage Paid for Mailpieces'. Ensure accuracy as this information is crucial for processing.
If using a Permit Imprint for payment, enter your PostalOne! Transaction Number in the appropriate field.
Once completed, present your form at a Post Office facility. If mailing 50 or more items or weighing over 50 pounds, visit a Bulk Mail Entry Unit.

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What qualifies a bulk mailing with the USPS?

If you have over 200 mail pieces or over 50 pounds of mail, you qualify for USPS bulk-mail rates. Let us know what you needwere here to serve you. There is a minimum of 200 domestic addresses to qualify as bulk mailing.

How do I send bulk USPS certified mail?

Heres how to send Bulk Certified Mail via the USPS: Sign up for Mailform. Upload all the documents and PDFs you want to send via USPS Bulk Certified Mail. Enter all the addresses for recipients. Select the USPS Certified Mail option for all the applicable documents. And thats it!

How do I pay for bulk mail?

There are three ways to pay for bulk mail postage: precanceled stamps, postage meter, and permit imprint.

How do I get a USPS bulk mail permit?

You can obtain a permit by either applying online through the Business Customer Gateway, if applicable, or completing PS Form 3615, Mailing Permit Application and Customer Profile, available from your local business mail entry unit or Post Office.

How do I get bulk mail?

There are companies that collect and sell information about consumers and businesses. You can buy or rent a mailing list from those companies. Look in the yellow pages under lists or mailing lists or do an online search for list providers in your area.

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