36 No. 3 Electronic and Postal Communications 2010 (vii) letters carried in accordance with an agreement entered into by the licensee; (viii) transfers between document exchanges; (ix) letters carried to the premises of a provider of electronic main service for the purposes of being transmitted as electronic mail, or letters carried from the premises of such a person after having been so transmitted; (x) letters carried and delivered by a private friend without hire, reward or other profit; and (xi) letters carried and delivered personally by the sender. (2) Where any question arises as to whether or not any postal article is a letter within the meaning of this Act, the decision of the Authority shall be final. Postal licences to be issued unconditionally or subject to condition 34.(1) The Authority may grant a postal licence on such terms and conditions and in consideration of such payments as it thinks fit to any person for the doing of any act or the performance of service falling within section 33 as is specified in the postal licence, and anything done in accordance with a postal licence granted under this section shall not constitute an infringement of the privilege conferred by section 33. (2) A postal licence granted under sub-section (1) may be granted either to any person, class of persons or particular person, and may include without prejudice to the power to impose conditions conferred by that subsection and conditions requiring the payment of a fee to the Authority on the grant of the postal licence or the payment to the Authority of a periodic fees during the validity of the postal licence or to both of such amount as may be determined under the postal licence.