For ShipStation Users
Stop Shipping Air
Every oversized box costs you money on dimensional weight.
String automatically picks the right box for every ShipStation order — so you stop paying
to ship empty space.
For ShipStation Users
Every oversized box costs you money on dimensional weight.
String automatically picks the right box for every ShipStation order — so you stop paying
to ship empty space.
Trusted by ShipStation brands
- Wasted spend - oversized boxes mean higher dimensional weight charges on every shipment
- Wasted time - pickers stop to decide, every single order, all day
- Wasted accuracy - busy days mean rushed guesses, and rushed guesses mean returns and complaints
ShipStation doesn't solve this on its own. It wasn't built to.
String fills the gaps — saving you time and money on every order that slips through
✅ No changes to ShipStation
✅ Free white-glove onboarding
✅ We'll build custom packing rules
Just give us access, and we'll take care of the rest. You save money without lifting a finger.
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.
https://gainsinbulk.com
✅ Lower shipping costs by picking the right box(es) for the best price
✅ Spend less time on ticket prep for fulfillment
✅ Reduce customer complaints with better shipping accuracy
String is like hiring a cool robot that figures out the best package. String does a great job of making our team more efficient AND more accurate.
https://ketochow.xyz
Simple and predictable.
No surprises.
$450 $ 350 /month when billed annually
We use the size and weight of every product and box you use in ShipStation, then calculate the smallest box that fits each order — following any custom rules you set.
String supports custom packing rules, and our Custom plan includes building bespoke logic for your specific catalog.
Standard plans include a 30-day money-back guarantee, so you can try it with no risk.
The smart layer for ShipStation — fewer clicks, fewer errors, more savings.