On-line or by snail mail, NSA et al have you covered. For your own protection of course.
http://www.msn.com/en-us/news/us/rep...-us/ar-BBbBDKr
The surveillance program, officially called mail covers, is more than a century old, but is still considered a powerful investigative tool. At the request of state or federal law enforcement agencies or the Postal Inspection Service, postal workers record names, return addresses and any other information from the outside of letters and packages before they are delivered to a person?s home.
The Postal Service also uses a program called Mail Imaging, in which its computers photograph the exterior of every piece of paper mail sent in the United States. The program?s primary purpose is to process the mail, but in some cases it is also used as a surveillance system that allows law enforcement agencies to request stored images of mail sent to and received by people they are investigating.
Another system, the Mail Isolation Control and Tracking Program, was created after anthrax attacks killed five people, including two postal workers, in late 2001, and is used to track or investigate packages or letters suspected of containing biohazards like anthrax or ricin. The program was first made public in 2013 in the course of an investigation into ricin-laced letters mailed to President Obama and former Mayor Michael R. Bloomberg of New York City by an actress, Shannon Guess Richardson.