California Code, Civil Code - CIV § 2161

A carrier of messages for reward, other than by telegraph or telephone, must deliver them at the place to which they are addressed, or to the person for whom they are intended. Such carrier, by telegraph or telephone, must deliver them at such place and to such person, provided the place of address, or the person for whom they are intended, is within a distance of two miles from the main office of the carrier in the city or town to which the messages are transmitted, and the carrier is not required, in making the delivery, to pay on his route toll or ferriage; but for any distance beyond one mile from such office, compensation may be charged for a messenger employed by the carrier.