Due to changes to USPS’s Business Account platform, all customers using Auctane-hosted products (such as Stamps.com, Endicia, ShipStation, or ShipStation API) must grant Auctane permission to maintain their specific Negotiated Service Agreement (NSA) rates. You can do so through the USPS Business Portal.
For an overview of how Negotiated Service Agreement (NSA) customers use a USPS Enterprise Payment Account (EPA) with a Stamps.com account , see our USPS Business Portal & Enterprise Payment Account (EPA) page.
New to the USPS Business Portal and NSA Rates? Please see our page for New Customers: Link Your USPS Business Account to Stamps.
Action Required: Link Accounts to Keep USPS NSA Rates
You must link your account to continue using your USPS NSA Rates. Customers who do not complete this new linking process will lose access to their NSA rates when printing USPS labels.
Required:
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For contract rate mapping
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To call tracking data on your behalf
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As a contractual precursor to our API migration
Be sure you have received the following four pieces of information from your USPS sales representative:
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Promo Code: Required to create your new Stamps.com account.
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CRID (Customer Registration ID): Required for final setup.
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MID (Mailer ID): Required for final setup.
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EPS (Enterprise Payment System) Number: Required for final setup.
To obtain an NSA (Negotiated Service Agreement) Promo Code, you must contact a USPS Sales Representative directly and follow their formal negotiation process. NSAs are personalized agreements for high-volume business mailers, and promo codes are not publicly available.
How to Contact a USPS Sales Representative
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Use the Contact Directory on PostalPro. The USPS website for commercial mailers has a contact directory with specific phone numbers and email addresses for various services, including the Mailing and Shipping Solutions Center (MSSC) for commercial customers.
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Email the Pricing Strategy team. For initial inquiries, send an email to nsa@usps.com to begin the process. The email should include a proposal with reasons for requesting an NSA.
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Call the Pricing Strategy team. You can contact the Pricing Strategy division directly by calling 202-268-7284.
Prepare Your NSA Proposal
Negotiated Service Agreements are not instant discount codes but are the result of a formal process. Your request will require a detailed proposal outlining the following:
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The reasons for seeking an NSA.
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Supporting documentation.
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Information that meets the general requirements of the NSA program.
Before having a substantive discussion, you will be required to sign a nondisclosure agreement.
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If you have never printed USPS labels with NSA rates before, you must first create an account with Stamps.com or ShipStation that uses an NSA Promo Code. Please contact your USPS Sales Representative to obtain an NSA Promo Code.
During registration, input this promo code, then complete your account registration. Then proceed to the Step-by-Step connection guide below.
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If you have connected your NSA rates to your existing Stamps.com or ShipStation account, log in to your account on Stamps.com.
Dashboard Banner: A banner titled Connect your USPS business account to Stamps.com to access NSA rates will also persist at the top of your screen. This banner will remain visible throughout the app until the process is finished.
Locate and click the new See Instructions button that appears on your dashboard.
Click Link your business account to begin the process of securely connecting your USPS account.
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To begin, click See Instructions.
Clicking See Instructions from either the pop-up or the banner will open a new browser tab to the Stamps.com guidelines.
Automatic Login: You will be automatically authenticated into the Stamps.com interface based on your active ShipStation session. No additional login is required.
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Follow the on-screen prompts and complete the flow within the Stamps.com tab to finalize your Customer Onboarding Portal steps.
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This procedure begins in the external USPS Customer Onboarding Portal (COP) and finishes in your Stamps.com account.
The connection process requires a critical authentication step that grants your Stamps.com account access to charge you the correct, discounted NSA rates on your labels.
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Click Link your business account in your Stamps.com dashboard.
This action will redirect you to the USPS Customer Onboarding Portal.
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Complete the USPS Authentication within the USPS COP.
Proceed through registration and review your My Account dashboard.
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Click the Go to Auctane button after you complete the steps in the USPS COP.
This will take you back to your Stamps.com account to finalize your account setup..
Rate Linking & Authorization Step
This action doesn't just navigate you back. It performs a vital step of giving Stamps.com permission to securely link your specific rates, ensuring you receive the correct discount.
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Ensure your CRID, MID, and EPA # are correctly recognized and set up.
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Await USPS Approval.
Let your USPS Sales Representative know you have completed the COP. The USPS will process and approve your linked rates. Once approved, you will automatically begin paying your discounted NSA rates with us.
Follow these steps to connect your USPS business account to Stamps.com.
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Click the button to log in to your Business Account.
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Verify your identity.
Completing the identity verification process secures your account.
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Set up a Payment method.
Add a credit card or ACH payment method to your USPS account.
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Review and accept the Business Service Agreement (BSA) terms and conditions.
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Authorize Auctane to ship on your behalf using your USPS account.
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Confirm your USPS Credentials.
Check your USPS account and verify your CRID, MID, and EPS credentials are connected in Stamps.com.