ShipStation

The integration is straight-forward but lacks the ability to configure it to specific needs. For example, we operate a warehouse that both ships and provides for local pickup. The integration will not import anything without a shipping address, so we can't use it for operations (only shipping). Additionally, the frequency of sync is variable. It is fast in the morning, but slow in the afternoon (busy time). You can manually sync, but again that isn't a good operational solution.