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Pull the Right String.

ShipStation is powerful. String makes it effortless.
The right box, the right rate, the right workflow,
every time.

Happy ShipStation String User

Trusted by e-commerce brands using ShipStation

brands
 

Pull the Right String.

ShipStation is powerful. String makes it effortless. The right box, the right rate, the right workflow, every time.

Core Features

Smart Packing

Pick the right box every time so you don't waste space or money

Auto Rate Selection

String picks the carrier service that gets the package to your customer when they expect it without the extra clicks and at the best price.

Time Savers

Hold & Release Based on Inventory

Out of stock? String holds the order and ships it as soon as it's ready.

Inventory Auto-Split

If only part of the order is ready, String ships what's available and holds the rest.

Pre-Order Auto-Split

Ship in-stock items now and send pre-orders later — automatically.

Multi-Package Auto-Split

String automatically splits big orders into separate ones for each box.

Auto-Batch

Group similar orders together so you ship more in fewer steps.

Works With Your Current Setup

No need to change tools — String runs right inside ShipStation.

 

Customer Testimonials

Our company has been using ShipStation for several years, but when we recently added String, we discovered a whole new level of servicing online orders. The folks at String could not have been more supportive and helpful. Now, our orders flow in with the best shipping service designated at the best price. Also, the savings we are experiencing only add to the many advantages of using String with ShipStation. These two platforms are a 'perfect duo!'
Dale Parker

Dale Parker

VP, Claxton Bakery, Inc.

Thanks once again for all of your help getting String set up for us. We really needed this upgrade. It seems like a great fit! ... I continue to be very satisfied with Strings performance and customer service.
Mystic Monk Coffeee

Mystic Monk Coffeee

String has had a substantial impact on our fulfillment process. It has led to substantial cost savings on shipping, reduced time spent on ticket preparation for fulfillment and a decrease in customer complaints due to the unshipped order reporting feature. We are extremely satisfied with all aspects of String's service.
Kareem Elgendy

Kareem Elgendy

CEO, VEILED

Read The Case Study

String is super set-in-and-forget-it in nature. We don't ever really have to worry about it working - it just works, and actively saves us money on a daily basis. What's particularly cool is that it's dynamic. As rate cards shift, the algorithm immediately adapts.
Will Nitze

Will Nitze

Founder & CEO, IQBAR

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String has not only allowed us to take full advantage of our current parcel rate structures but has also helped us improve them. We have parcel carriers now fighting for our business while we are enjoying lowered order processing times!
Ryan Byrd

Ryan Byrd

Director Of Operations, Rise Brewing Co.

Read The Case Study

String is like hiring a cool robot that figures out the best package and cheapest shipping service for each order - it's especially handy when you're dealing with new shipping services or rate changes and does a great job of making our team more efficient AND more accurate.
Chris Bair

Chris Bair

Owner, Keto Chow

Read The Case Study

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Why ShipStation users need String

Feature

ShipStation

ShipStation+String

Smart Packing
Auto Rate Selection
Hold & Release Based On Inventory
Pre-Order Auto-Split
Inventory Auto-Split
Multi-Package Auto-Split
Auto-Batch
Works With Your Current Setup
❌ No
❌ No
❌ No
❌ No
❌ No
❌ No
❌ No
✅ Yes
✅ Yes
✅ Yes
✅ Yes
✅ Yes
✅ Yes
✅ Yes
✅ Yes
✅ Yes

String enhances your existing ShipStation workflow. No extra work needed.

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Case Studies

How String made our customers fulfillment effortless.

Kareem Elgendy
Get the full case study
Will Nitze
Get the full case study
Ryan Byrd
Get the full case study
Chris Bair
Get the full case study
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Frequenty Asked Questions

 

How Does String Help If I Already Have Shipping Rules?

Your ShipStation rules might work 60-70% of the time, but when they're wrong, it costs you money. Your team doesn't have time to check every order and find the best rate manually. That's where String comes in! String knows your products, package sizes, and carrier options. When a new order comes in, we automatically pick the best option in real time. Instead of being right only 70% of the time, you now get the best rate 100% of the time—saving you money on every shipment!

Will String Only Pick Slow USPS Services?

No! String is built to get your orders to customers fast while also saving you money. String checks delivery times for every shipment. If a shipping option won't arrive on time, String filters it out automatically. This means you get the best rate without slowing down delivery—and sometimes, even faster shipping!

How Does String Pick the Smallest Package?

String finds the smallest and best box for every order. We keep track of all your products' sizes and weights and test different ways to fit them into the smallest box possible. If a product needs special packing, no problem! String follows your rules to make sure everything is packed just right. Need to add new products or packages? It's easy! No matter how many items you have, String will always find the best fit to save you money.

Do I need to change my shipping setup?

No! String integrates seamlessly with ShipStation—no changes needed, just savings.

Untangle Your Shipping - Automatically!

The smart layer for ShipStation: fewer clicks, fewer errors, more savings.

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