If you’re pretty exigent when it comes to real mail and having a good service, try to use the GPS Mail Logger that is able to track your mail.

It is a small & bendable GPS unit that you place inside an envelope, and afterwards check information about its location, speed, and altitude. You’d expect all the details to go live on the web as the mail goes to the destination, but sadly the data is store on a microSD memory card.

The integration with Google Earth is pretty neat, so you can have an “image” of where and when your mail has been. The battery can hold up to 2 weeks, or 20 minutes, depending on the tracking mode you chose: motion-activated, or minute-by-minute.

- Fits into an envelope at ¼ of an inch thin
- Designed to USPS Specifications For Quality Control

The GPS Mail Logger costs $696.