We’ve partnered with the United States Postal Service to safely and reliably deliver USPS Priority Mail shipments to your customers. Tapping into USPS’s Priority Mail network and using a variety of transportation methods, your shipments will arrive at your customer’s door quickly and at an affordable price.
Important Update (Effective August 29, 2025):
All U.S.-bound shipments must use Delivered Duty Paid (DDP) postage. Duty-free entry under Section 321 has been suspended. Any U.S. shipment sent without DDP will be held and returned.
✅ Compliance Reminder: Ensure all U.S. shipments comply with DDP requirements (10-digit HTS code, Country of Origin, and manufacturer information) to avoid delays or returns.
Table of Contents
- Service Features
- Eligibility
- Buying Postage
- Sending Your Shipments
- Frequently Asked Questions (FAQ)
Service Features
By choosing USPS Priority Mail for your shipments, your postage has you covered with the following features:
| Features | Fully Tracked (Excluding letters & flat envelopes) | Chit Chats Insurance Available | Return Service | |
| Special Features | Signature Confirmation | Carrier Insurance | U.S. Return Address | Chit Chats Return Labels |
Check out our shipping calculator to get a quote for your shipment.
*Estimated delivery days can vary and some exceptions apply. U.S. territories (i.e. Alaska, Hawaii) and APO/FPO military addresses can take longer depending on the transportation available.
Eligibility
Before you get shipping, let’s find out if USPS Priority Mail is the best fit for your shipments.
This service is designed for shipments weighing up to 70 pounds. Please note the maximum dimensions for this service to avoid surcharges for oversized shipments.
- Length + 2 x (Width + Height) less than 108 inches
To keep shipments safe and moving smoothly, there are limitations on the types of items that you can send with this service. Please refer to our partner carrier’s restrictions for more information.
Buying Postage
There are two ways to buy USPS Priority Mail postage for your shipments:
- “Create a Shipment” one at a time in your account
- Import multiple shipments via a connected store, the Chit Chats CSV or API
All package types are compatible for this service. If you create shipments one at a time you'll select the package type under the Package step.
If you import shipments from your store, save time by updating your shipping presets. When you import your shipments with a CSV or API connection, use the following inputs:
- package_type: letter, flat_envelope, thick_envelope, parcel
- postage_type: usps_priority_mail
Having trouble? Read our troubleshooting tips.
Once you’re happy with the details for returns and insurance, you can select the shipments you want postage for and click on “Pay for Shipment”. Now you’re ready to print your postage labels! Be sure to apply them to your packages with some of our best practices for packaging, like ensuring your barcode is visible on a flat area of the package.
Sending Your Shipments
Once your shipments are ready to get to a Chit Chats, you’ll want to take a moment to get organized and sort them with your other U.S. shipments, apart from your Canadian and international shipments.
Batching is the way to go when you have a lot of shipments to send. Stay organized and receive simultaneous acceptance scans on your tracking when you use a batch label.
After our team receives and processes your shipments, you’ll want to share the tracking details with your customers. Learn how to track your shipments here.
Frequently Asked Questions (FAQ)
How do I manually enter the tracking number into my online store?
The tracking number includes the prefix '420' with the destination Zip Code, followed by the 22-digit USPS tracking number. When manually entering your tracking number, please remove the first 8 digits. This step is not necessary with store integration.
Why can't I see USPS Priority Mail as an option for my U.S. shipment?
If you are having trouble seeing a Priority Mail rate for your shipment, please double-check to make sure you've included accurate measurements for your packages and that they do not exceed the maximum weight or dimensions for this service.
Which currency is my postage fees displayed in?
All of our low-cost U.S. postage is displayed in Canadian dollars (CAD).
Where can I ship with Priority Mail?
You can ship to addresses in all 50 states including PO boxes and apartment addresses, military addresses (i.e. APO, FPO, DPO), and U.S. territories.
Is signature confirmation available?
Yes, signature confirmation is available for Priority Mail shipments, for cases where you want even more assurance for your shipments.
Can I send letters with USPS Priority Mail?
Yes; however, letters and flat envelope package types are not fully tracked with this service. Tracking halts for partially tracked services after being given to our partner carriers.
Can I refund unused postage?
Yes, if you change your mind or your customer cancels an order you can request a refund for the unused postage label. It can take up to 20 business days for USPS to approve your refund request. Learn more.
Have feedback for us on this service? Share it with our support team.