Mail fraud involves illegal activity that uses the U.S. Postal Service to distribute material or make communications that are prohibited by law. Often, such a crime is added to other crimes when the evidence demonstrates that the U.S. Postal Service facilities were used by the offender. The offense also includes the element of intent to deceive. Therefore, mail fraud involves an intent to deceive others or the government by use of the U.S. Postal Service facilities. When intent to deceive is shown, even one instance of use of the U.S. Postal Service facilities is enough to impose charges. However, often additional criminal counts can be added to the charges for each instance of the use of the U.S. Postal Service facilities.