Automatic sender & receiver tracking

For example:
Parcel is sent from China to Lithuania.

1. Parcel is located in China (Sender), app shows tracking data from China post
2. Parcel leaves China (Sender), app starts automatically tracking Lithuanian post (Receiver).

Same feature is already implemented on 17track:
http://www.17track.net/en/result/post.shtml

Just enter your tracking number and it will display all tracking information about your parcel sender & receiver country.
Please, add the same feature to Posted app.

Posted version: 1.53
iOS Version: 7.0.4