(a) A registration or report filed by first-class United States mail or by common or contract carrier is timely if:
(1) it is properly addressed with postage or handling charges prepaid; and
(2) it bears a post office cancellation mark or a receipt mark from a common or contract carrier indicating a time within the applicable filing period or before the applicable filing deadline or if the person required to file furnishes satisfactory proof that it was deposited in the mail or with a common or contract carrier within that period or before that deadline.
(b) A registration or report filed by means of electronic transfer is timely if it is received by the commission not later than midnight on the last day permitted under this chapter for filing the report or registration.