Scout can track your incoming and outgoing packages. You can upload packages manually along with tracking numbers.
If you want to import your packages manually, go to the Packages menu and click the blue "+" button in the top right of the screen.
Select "Auto-detect carrier" if you want Scout to try to find which carrier was used automatically based on the tracking number provided. Alternatively, if you want to enter the carrier manually, make sure that "Auto-detect carrier" is unticked and select the carrier from the list.