# Set up USPS
URL: https://support.starshipit.com/articles/5767391395855-set-up-usps
Canonical: https://support.starshipit.com/articles/5767391395855-set-up-usps
Markdown: https://support.starshipit.com/articles/5767391395855-set-up-usps.md
Updated: 2026-09-28

> For the complete documentation index, see [llms.txt](https://support.starshipit.com/llms.txt).

> Connect USPS through EasyPost or USPS Direct API, configure account settings, and add product codes.

Starshipit can connect to USPS through EasyPost or the USPS Direct API. Use the setup route that matches the credentials issued for your account. This guide covers the connection settings and the product codes you can add.

## Before you begin

For the EasyPost setup route, you will need an EasyPost account. You can [sign up for EasyPost](https://www.easypost.com/signup?utm_sourc%20e=StarShipIt). If USPS issued enterprise credentials directly, use the Direct API settings section at the end of this guide.

## Set up USPS through EasyPost

1. In Starshipit, navigate to **Settings** > **Couriers** > **USPS**.  
   Please note your shipping from country will need to be United States.
2. Tick Enable **USPS**.
3. Enter your **EasyPost API Key**.
4. Enter your **EasyPost USPS Account ID**.
5. Click **Save**.
6. Click **Test to ensure it works** to check your credentials.
7. Add your USPS Product codes.

## USPS products available through EasyPost

When using USPS with Starshipit, you can access a range of domestic and international shipping options to suit your delivery needs. Below is an overview of the available USPS services supported by Starshipit, including key features and delivery timeframes.

### Domestic services

**Ground Advantage**

* Used for domestic packages under 70lbs
* Fully tracked with delivery confirmation
* Cost-effective option for non-urgent shipments

**Priority Mail**

* Delivery in 1-3 business days
* Free boxes and envelopes available
* Includes tracking and insurance coverage up to $100

**Priority Mail Express**

* Fastest USPS service with overnight delivery to most locations
* Includes tracking, insurance and money-back guarantee

### International services

**Priority Mail International**

* Delivery in 6-10 business days to over 180 countries
* Tracking included for most destinations

**Priority Mail Express International**

* Delivery in 3-5 business days to many countries
* Includes tracking and insurance coverage up to $200

## Additional features

Using USPS via EasyPost integration with Starshipit allows users to select 'Signature Required' or 'Authority to Leave' on delivery.

## Configure USPS through EasyPost

| Setting | What it does |
| --- | --- |
| Enable USPS | Makes USPS available for shipment creation. |
| EasyPost API Key | Authenticates Starshipit with EasyPost. |
| EasyPost USPS Account ID | Identifies the USPS account in EasyPost. |
| Product codes | Add the USPS services enabled on the EasyPost account. |
| AES International Transaction Number (ITN) | Supplies the AES ITN for goods valued over US$2,500 when required for an international shipment. |

## Configure USPS through Direct API

If USPS has issued enterprise credentials directly rather than an EasyPost account, use the separate **USPS (via Direct API)** setup.

| Setting | What it does |
| --- | --- |
| Enable USPS (via Direct API) | Turns the direct USPS connection on. |
| Use USPS test environment | Sends requests to the USPS test environment. |
| Account number and Account type | Identify the USPS enterprise account. |
| CRID | Identifies the USPS Customer Registration ID. |
| MID | Identifies the USPS Mailer ID. |
| Manifest MID | Identifies the MID used for manifesting. |
| Product codes | Select the USPS mail class codes available on your enterprise account. |
| Cancel shipment | Enter a tracking number on the Cancel shipment tab to submit a cancellation request. |