Okla. Stat. tit. 21, § 21-1304: Letters - Mailing threatening or intimidating letters

Any person who shall send, deliver, mail or otherwise transmit

to any person, or persons, in this state any letter, document or

other written or printed matter, anonymous or otherwise, designed to

threaten or intimidate such person or persons, or designed to put

him or them in fear of life, bodily harm or the destruction of his

or their property, shall be deemed guilty of committing a Class D2

felony offense, and upon conviction thereof shall be punished by a

fine of not less than Fifty Dollars ($50.00) nor more than Five

Hundred Dollars ($500.00), and by imprisonment as provided for in

subsections B through F of Section 20O of this title.