Indiana Code Title 32. Property § 32-34-1.5-23

Sec. 23. (a) Subject to subsection (b), the holder of property presumed abandoned must send to the apparent owner notice by first class United States mail that complies with section 24 of this chapter in a format acceptable to the attorney general not more than one hundred eighty (180) days and not less than sixty (60) days before filing the report under section 18 of this chapter if:

(b) If an apparent owner has consented to receive electronic mail delivery from the holder, the holder may, at its election, send the notice described in subsection (a) by either first class United States mail to the apparent owner's last known mailing address, or by electronic mail, unless the holder believes the apparent owner's electronic mail address is invalid.