Stamps.com (US)

Stamps.com is a USPS postage reseller that grants access to all standard services offered by USPS, as well as additional international shipping options through GlobalPost.

This article includes:

Connect a Stamps.com Account to ShipEngine

To connect your Stamps.com account to ShipEngine:

  1. Click the United States Postal Service by Stamps.com tile.

    CONN_Carrier_USPStile_MRK.png
  2. Choose the option "Connect to an existing Stamps.com account", then click Continue setup.

    CONN_Stamps-ConnectionModal-Existing_MRK.png
  3. Enter your Stamps.com username and password, then click Continue setup.

  4. Review the details on the Confirmation screen, then click Connect.

You’re now ready to start creating USPS labels with your Stamps.com account!

Set Up Auto-Funding

Configure ShipEngine to automatically purchase postage when your Stamps.com account balance dips below a certain amount.

  1. Click Add Funds for your Stamps.com account listed under the Other Shipping Providers section.

    CONN_Stamps-AddFunds_MRK.png
  2. Select Set up Auto-Funding and set the minimum balance before more postage is automatically purchased.

    CONN_Stamps-AutoFund_MRK.png

    For example, if you wanted to purchase $100 any time your account balance is below $250, set the When balance drops below amount to ‘250’ and the Automatically fund by this amount to ‘100’. Then enter the maximum number of times ShipEngine should automatically purchase postage in a day next to Stop after this many times per day.

  3. Click Submit.

Reset a Stamps.com Account Password

When you update your Stamps.com account password with Stamps.com, you will need to update the password in ShipEngine as well. Otherwise, you will encounter an error when attempting to use USPS services.

  1. Click Edit for the Stamps.com account that needs an updated password (listed under the Other Shipping Carriers on the Connections page).

    CONN_Stamps-Edit_MRK.png

    This will open your Stamps account Settings.

  2. Click Reauthorize.

    CONN_Stamps-Reauthorize_MRK.png
  3. Enter your updated Stamps.com password, then click Confirm.

    CONN_Stamps-Reauthorize-Confirm_MRK.png

Available Features

Common Features

Feature

Supported?

Domestic Shipping

Green checkmark. Supported feature. Yes.

International Shipping

Green checkmark. Supported feature. Yes.

Electronic Customs Submission*

Red X mark. Unsupported feature. No.

Return Labels

Green checkmark. Supported feature. Yes.

Estimated Rates

Green checkmark. Supported feature. Yes.

Carrier Insurance

Green checkmark. Supported feature. Yes.

Tracking

Green checkmark. Supported feature. Yes.

Automatic Tracking

Green checkmark. Supported feature. Yes.

End of Day (Electronic)

Green checkmark. Supported feature. Yes.

End of Day (PDF)

Green checkmark. Supported feature. Yes.

Label Branding

Green checkmark. Supported feature. Yes.

Label Messages

Green checkmark. Supported feature. Yes.

Multi-package Shipping

Red X mark. Unsupported feature. No.

Multiple Accounts

Green checkmark. Supported feature. Yes.

Domestic ShippingInternational ShippingElectronic Customs SubmissionReturn LabelsEstimated RatesCarrier InsuranceTrackingAutomatic TrackingEnd of Day (PDF)Label BrandingLabel MessagesMulti-package ShippingMultiple Accounts

Services & Options

USPS Domestic Services

  • USPS First Class Mail

  • USPS Media Mail

  • USPS Parcel Select Ground*

  • USPS Priority Mail

  • USPS Priority Mail Express

USPS International Services

  • USPS First Class Mail Int'l

  • USPS Priority Mail Int'l

  • USPS Priority Mail Express Int'l

USPS Package Types

  • Package

  • Flat Rate Envelope

  • Flat Rate Legal Envelope

  • Flat Rate Padded Envelope

  • Large Envelope or Flat

  • Large Flat Rate Box

  • Large Package (any side > 12")

  • Letter

  • Medium Flat Rate Box

  • Non Rectangular Package

  • Regional Rate Box A

  • Regional Rate Box B

  • Small Flat Rate Box

  • Thick Envelope

Note

To meet USPS requirements, ShipEngine will always display postage for First Class Mail with the Large Envelope/Flat package type.

USPS Confirmation Options

  • No Confirmation

  • Delivery

  • Signature

  • Adult Signature

Additional Features

Feature

Description

Scheduled Pickups

After creating labels with Stamps.com services, you can schedule a carrier pickup.

Manage Funds through ShipEngine

Add funds to your Stamps.com account through ShipEngine using the credit card you have on file with Stamps.com. You can also set up auto-funding so you always have funds available to create shipping labels.

USPS SCAN Forms

Use ShipEngine to [generate USPS SCAN forms] for your Stamps.com shipping labels.

Domestic ShippingInternational ShippingElectronic Customs SubmissionReturn LabelsEstimated RatesCarrier InsuranceTrackingAutomatic TrackingEnd of Day (PDF)Label BrandingLabel MessagesMulti-package ShippingMultiple Accounts

Create USPS Labels for Tubes or Rolls

This section explains how to ship tubes via USPS First Class and Priority services. For each service, the same weight and size restrictions that apply to packages also apply to tubes.

While ‘Tube’ is not currently an available package type in ShipEngine, Stamps.com recommends using ‘Package’ as the package type for these shipments. Enter the tube’s correct dimensions to ensure that label charges reflect the proper rate, whether you are using your own custom packaging or the USPS provided Dual-Use Priority and Priority Mail Express tubes.

Tip

Reference the USPS 201e Quick Service Guide to help determine the girth of a package.

USPS First Class Mail Tubes

For tubes, the height and width will be the same. USPS determines the rate by the weight of the package.

Max Weight

15.99 oz

Max Dimensions

(L) 22" x (H) 18" x (W) 15"

USPS Priority Mail Tubes

Priority Mail is zone-based pricing. That means for certain zip codes you will have to enter the dimensions of your tube to obtain the correct rate.

Entering dimensions is always recommended to ensure your packages receive the correct rate from the postage provider. Incorrect dimensions can result in packages being returned, or rate adjustments applied to your postage provider account after shipping.

Max Weight

70lbs

Max Dimensions

Length + Girth < 108"

USPS Dual-Use Tubes

If you ship using the small or medium Priority Mail or Express tubes provided by the USPS, you will still select ‘Package’ for the package type and enter the dimensions for the tubes into ShipEngine.

Domestic ShippingInternational ShippingElectronic Customs SubmissionReturn LabelsEstimated RatesCarrier InsuranceTrackingAutomatic TrackingEnd of Day (PDF)Label BrandingLabel MessagesMulti-package ShippingMultiple Accounts