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Sales Channels

Reduce costs and boost customer satisfaction with automation-first support that frees your team to deliver conversational and proactive support at internet scale
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Over 70 Carriers

Onboard, engage, and activate new customers
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Shipping API

Convert more site visitors into paying customers—and grow revenue fast
Explore our Shipping API
popular CARRIER integrations
Royal MailFedExView more
Customers
Scrub Daddy
Read how Shiptheory has helped Scrub Daddy save 4-5 days in manually assigning deliveries.
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Jimmy's Iced Coffee
Read to find out a little more about Jimmy's, and how Shiptheory helps them on their mission to fill up fridges around the world with high-quality iced coffee.
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PetShop.co.uk
The secret sauce is the combination of NetSuite and Shiptheory, to manage all areas of their business and seamlessly ship their orders. Learn how this combination has helped PetShop save £1000s every week.
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Integrate NetSuite & USPS

Shiptheory fully integrates with NetSuite and USPS to automate your shipping process entirely. USPS shipping labels are automatically printed and ready to ship to your customers, seconds after a sale.
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Why Choose Shiptheory for Your USPS Shipping Needs?

Integrating NetSuite with USPS is easy. No more typing USPS shipping labels.
Your NetSuite orders can be automatically sent to USPS using our flexible shipping rules engine

Carbon Neutral Shipping

88% of consumers are loyal to businesses who support ethical causes - empower your customers to offset the carbon from their shipments.

Easy Returns

92% of customers will buy from you again if their returns process is easy. Take full control with your own fully brandable
returns portal.

Address Validation

Save time and money on failed deliveries by never missing a delivery again - use Shiptheory Address Validation.

Instant Impact

Add notes with a 99.9% read rate into your orders - the perfect place to ask for reviews, add upsells and cross sells, offer voucher codes and more.

Frequently Asked Questions

Common USPS  NetSuite Shiptheory questions answered.
What do I need to get started?
You need a Stamps account. You can create one at https://registration.stamps.com to get set up. Once signed up, make a note of your username and password.
Can I Integrate My Endicia Account?
Yes! You can connect your Endicia account directly via our USPS integration.
Can I print USPS labels from multiple computers?
Shiptheory is entirely online. You can access Shiptheory and print USPS labels from as many computers as you need.
Do I need a USPS label printer?
Shiptheory can print labels on thermal label printers or regular desktop printers.