It's just insane this app is free and works perfectly straight off the bat. Thank you for your wonderful work! A light program that does a lot of the heavy lifting.

Very light and efficiency. 5 stars for your work. Recommend for all SME stores. I will talk to all my friends about this.

New Shopify update with locations was rejecting our tracking numbers/order fulfillment. MassFulfill was able to sync and send our tracking back- plus the developers are quick to reply to emails and help work through issues.

Absolutely amazing app. Thank you team!

Better and easier than Uptracker. Thanks

Quick and easy to install. App does exactly what it says it does. Very easy to use. Support team very quick, responsive and good. This app is a very good addition to busy sites. Recommend++. Patrick

Absolutely MAGNIFICENT! Thank you for saving people’s SANITY!

Easiest way to get shipping info sent out!

Life saver. We upload the tracking number for all golf cart coves every day and this helps reduce the calls for tracking numbers.

I wonder why they're having only 38 reviews. This app is awesome!