In the various cases in which the sending of a letter is made criminal by this chapter, the offense is deemed complete from the time when such letter is deposited in any post office or any other place, or delivered to any person with intent that it shall be forwarded. And the party may be indicted and tried in any county wherein such letter is so deposited or delivered, or in which it shall be received by the person to whom it is addressed.
Okla. Stat. tit. 21, § 29