Carrier
USPS labels at discounted rates, built in or on your own account.
Print discounted USPS labels right away with Postsale's built-in USPS option, or connect your own USPS account. Commercial rates, cubic pricing when it's lower, SCAN forms, pay-on-use returns and pickups come with it.
Connect as many USPS accounts as you need, each with its own rates.
14-day free trial No card to start Cancel anytime Human support from day one
Setup
Set up USPS in three steps.
Step 1
Start Your Trial
Sign up for Postsale and start your 14-day free trial.
Step 2
Choose How You Ship USPS
Print right away on Postsale's built-in USPS account, or go to Carriers > USPS and connect your own USPS account. Either way, discounted commercial rates apply.
Step 3
Start Printing Labels
Choose USPS when you create a shipment. Postsale shows the rates, including cubic pricing when the package qualifies.
In the app
See it in Postsale.
Services
USPS services you can ship with.
Domestic
- Ground Advantage
- Priority Mail
- Priority Mail Express
- First-Class Mail (letters and flats)
International
- First-Class Mail International
- Priority Mail International
- Priority Mail Express International
Packaging
- Letter
- Flat (large envelope)
- Soft Pack
- Padded Flat Rate Envelope
- Legal Flat Rate Envelope
- Flat Rate Envelope
- Small Flat Rate Box
- Medium Flat Rate Box
- Large Flat Rate Box
Features
What you get with USPS.
Discounted commercial rates
USPS Commercial pricing from your first label, lower than Post Office prices.
Cubic pricing when it's lower
Priority Mail boxes up to 0.5 cubic feet and Ground Advantage boxes up to 1 cubic foot can get cubic pricing, at 20 lbs or less with a longest side of 22" or less. Postsale uses the cubic rate when it's lower.
One SCAN form for the day
Make a single barcode that covers the day's USPS shipments. At pickup, one scan accepts the whole batch.
Return labels you pay for when used
Print return labels that cost you only when the customer uses them, so you can put one in every box.
Schedule a pickup
Schedule a USPS pickup from Postsale instead of a trip to the post office.
Hazardous materials
Mark a shipment that contains hazardous materials and choose the type, on Ground Advantage, Priority Mail and Priority Mail Express within the U.S.
Bring your USPS NSA rates
Have a Negotiated Service Agreement (NSA) with USPS? Connect your own USPS account that holds it, and our support team turns on your NSA rates, at no extra cost.
As many USPS accounts as you need
Connect every USPS account you ship on, for example one for each location you ship from, and give each a nickname. The one you set as default is used for rates and labels.
Questions
About USPS and Postsale.
Do I need my own USPS account?
No. You can print discounted USPS labels right away with Postsale's built-in USPS option, or connect your own USPS account if you have one. Either way, you get discounted commercial rates, including cubic pricing when it saves money.
How does cubic pricing work?
Cubic pricing is based on your box's size (L x W x H / 1728) instead of its weight. Priority Mail boxes up to 0.5 cubic feet and Ground Advantage boxes up to 1 cubic foot qualify, at 20 lbs or less with a longest side of 22" or less. Postsale works out the cubic rate and uses it when it's lower.
What is a SCAN form?
A SCAN form is a single barcode that covers all your USPS shipments for the day. Instead of scanning each package individually, your carrier scans one form to accept the entire batch.
When am I charged for a pay-on-use return label?
You're charged only when the customer drops the package off with USPS. Unused return labels cost nothing.
Can I ship hazardous materials with USPS?
Yes, within the U.S. on Ground Advantage, Priority Mail and Priority Mail Express. Priority Mail and Priority Mail Express go by air. Flammable liquids and other materials USPS bars from air can only go Ground Advantage. Check Contains Hazardous Materials on the shipment and choose the type. USPS rules for that material still apply, including how you pack and mark the package.
Can I use my USPS NSA rates?
Yes. An NSA is an agreement you negotiate directly with USPS for your own account. Connect that USPS account to Postsale and write to our support team. We turn on your NSA rates, and your negotiated pricing then applies when you create labels.
Can I connect more than one USPS account?
Yes. Connect as many of your own USPS accounts as you need and give each a nickname. The account you set as default is the one Postsale uses for rates and labels, and you can change it in Carrier settings.
Try it on your own USPS shipments.
Predictable pricing. No per-label software fees.
14-day free trial No card to start Cancel anytime Human support from day one