Idaho Code § 18-6716: Opening telegrams.

Every person not connected with any telegraphic office who without the authority or consent of the person to whom the same may be directed, willfully opens any sealed envelope enclosing a telegraphic message and addressed to any other person, with the purpose of learning the contents of such message, or who fraudulently represents any other person, and thereby procures to be delivered to himself any telegraphic message addressed to such other person, with the intent to use, destroy or detain the same from the person or persons entitled to receive such message, is punishable as provided in section 18-6715, Idaho Code.