For the purpose of this chapter, an insurance-support organization transacting business outside this state which has an effect on a person residing in this state shall be deemed to have appointed the Commissioner to accept service of process on its behalf, provided the Commissioner causes a copy of such service to be mailed forthwith by registered mail or statutory overnight delivery to the insurance-support organization at its last known principal place of business. The return postcard receipt for such mailing shall be sufficient proof that the same was properly mailed by the Commissioner.
OCGA § 33-39-17