Yes, we support uploading tracking numbers and links to orders being tracked on 17track.net.  

Setting Up Your Data Feed

To configure EZ Fulfill to work with 17track, you need to set up your data feed with the below steps:

1. Set the default tracking company to Other.
2. Set the default tracking URL to https://t.17track.net/en#nums=
3. Enable Append Tracking Number To URL configuration option.

This will configure EZ Fulfill to add the correct tracking link for orders being tracked using 17track.  The tracking URL on your Shopify store will look like this.