Tracking updates feel flaky and inconsistent. I keep seeing the delivery status lag behind what the carrier shows, which is annoying when I am trying to verify a shipment. For something that is basically about visibility, that mismatch is hard to ignore.
The customer alerts are the best part for me. I set them up once and now I just spot check the messages, though the notification options could be clearer.
Too many quirks for tracking. I ran into mismatched statuses between carriers, and I do not trust the delivery info.
Solid delivery updates in one place. I use it daily and it rarely confuses me.
Rate it, and the next carrier reading this page sees what you found.