Your next label is about to get an upgrade. USPS is connecting label printing directly to its own systems, so the postage on your label matches what USPS charges today.
For Stamps.com customers, that means up-to-date USPS postage rates, cleaner data, and a more secure connection, all without changing how you print.
What’s new at USPS
USPS now offers a direct connection for label printing, known as an API. An API lets two systems exchange information without anyone in the middle. Your label request goes in, and USPS sends back the postage and the label.
Until now, a rate change reached you as an announcement. You read it, then updated your pricing. With USPS’s new API, changes flow straight to your labels, so there’s nothing to wait for.
There’s nothing to switch on, either. Most sellers will print labels the same way they do today.
Postage that matches USPS
Because rates come directly from USPS, the postage on your label reflects its current pricing. As USPS moves to dynamic pricing, a direct connection keeps your labels in step.
A solo seller pricing shipping for a new product and a warehouse team printing hundreds of labels a day need the same thing: USPS postage rates they can trust. Now the number on the label is the number USPS charges.
A shorter path for customer data
Label data now travels to USPS over a direct, modern connection built to current USPS security standards. Fewer handoffs means fewer places for information to go astray.
Customer names and addresses take a shorter, more secure path to USPS.
Cleaner data, fewer label fixes
Your shipment details reach USPS in a standardized format. That cuts down on mix-ups and mismatches between what you entered and what the carrier sees.
Think of an apartment number that drops off, or a ZIP code that doesn’t line up with the city. Consistent data means fewer of those surprises, and fewer labels to reprint.
A one-minute address check
USPS’s connection needs a complete address on every label: street address, city, state, and ZIP code. Most sellers already have this covered, but a quick look is worth it.
If you print with Stamps.com, open your account settings and confirm your ship-from and return addresses are complete. Ship from a different location? Add it as a ship-from address.
If you connect through an integration or API, send the full address with every label request, not just a ZIP code.
Where USPS shipping is heading
Carriers are building direct, real-time connections, and sellers gain the most when the technical side runs quietly in the background. Stamps.com handles the connection, the data format, and the rate updates, so you can stay focused on packing orders and getting them out the door.
Current USPS postage rates, cleaner data, and a more secure connection, with less for you to manage. Confirm your addresses in your account settings, and you’re ready for what’s next. New to Stamps.com? Start mailing with Stamps.com today.
Frequently Asked Questions
Can Stamps.com help me track my postage spending?
Yes. Our reports show you you activity and total spend by carrier, mail class, shipping service -- so you always know how much you send. You can customize your reports by date and, if you are on our multi-location plan, you can also view activity and spend per location and user.
Does postage from Stamps.com cost more than postage from the Post Office or UPS?
No. Our negotiated carrier discounts ensure you pay less for First Class Mail® stamps and get up 88% off shipping services from USPS, UPS, and other top carriers. These are discounts you will not find at the Post Office as they are reserved for high volume enterprises. Check stamps.com/carriers for latest on carriers and rates.
How do I calculate domestic postage costs?
Our rate advisor feature helps you calculate exact postage or shipping rate for anything you send. All you need is your item's weight and dimensions -- we do all the math for you and recommend cheapest, fastest, and best rates across all carriers.
How fast is Priority Mail Express International?
Delivery is made by the country's postal service in 3 - 5 business days, depending on the destination.
How fast is Priority Mail International?
Generally, it takes Priority Mail International six to ten business days. USPS hands off shipments at the border of the destination country before the local postal service completes the delivery.
How much does USPS First Class Package International® cost?
While price varies depending on weight and destination, rates for this service begin at $17 dollars.
USPS Priority Mail vs. First-Class Mail: What is the speed comparison?
USPS Priority Mail generally delivers in 2-3 business days. First-Class Mail, while more economical, typically takes 1-5 business days for delivery.
What are NetStamps
NetStamps are USPS-approved blank labels on which you can print your own stamps. Simply buy postage on Stamps.com, use any printer to print on a NetStamps sheet or roll, and stick the NetStamp to an envelope, postcard, or other First Class Mail.
What are nonmachinable envelopes?
Nonmachinable envelopes might be non-rectangular, rigid, unevenly thick, or have non-paper closures, meaning they cannot be processed efficiently by USPS's automated sorting equipment, and require special handling, resulting in a surcharge in addition to the standard postage.
What are the different types of Flat Rate Envelopes?
Regular, Legal, and Padded
What are the USPS Ground Advantage costs and rates?
Packages up to 15.999 ounces are priced in 4-ounce increments, while heavier packages are charged by the pound, rounded up. The further the distance, the higher the cost. Additional fees apply to oversized packages. Easily calculate discounted rates anytime at Stamps.com.
What are the USPS Priority Mail delivery times?
USPS Priority Mail typically takes one to three business days, depending on destination, to deliver. You can easily check for a delivery time estimate on USPS’s Priority Mail Delivery Map.
What items can be shipped through Media Mail?
Educational materials like books, music, or videos that never include any products or advertising.
What shipping rate discounts can I get with Stamps.com?
With USPS, Stamps.com customers have access to Commercial Base, Commercial Plus, Cubic Pricing, and Negotiated Service Agreements. Savings include:
- Up to 16% on all Priority Mail Express® shipments
- Up to 30% on Priority Mail® shipments
- Up to 7% on international shipments
- Up to 40% on package insurance
With UPS, Stamps.com customers get up to 73% off UPS 2nd Day Air® and up to 77% off UPS® Ground Daily Rates.* Plus, many common surcharges are waived, including the residential surcharge for UPS Ground shipments.
*UPS rates are limited to shipping from the continental U.S. only. These rates and discounts exclude shipment origins from Hawaii, Puerto Rico, and Alaska. These rates and any applicable discounts are subject to change at any time without notice.
What USPS service should I use if I want to send large envelopes under 15.994 oz, letters up to 3.5 oz, and postcards?
First-Class Mail International®
When using Priority Mail International, should I ship Flat Rate or by weight?
Flat Rate Envelopes are ideal for documents or small, dense items weighing 4 lbs or less, as they offer a single price based on the destination country. For items between 4 lbs and 70 lbs, or those that don't fit into the Flat Rate Envelopes, you'll need to ship by weight using your own packaging. It’s more affordable to use Flat Rate boxes if your item is under 20 lbs.