Electronic Transactions Act, No. 19 of 2006 7 (2) Unless otherwise agreed as between the originator and the addressee, the addressee is to regard a data message, electronic document, electronic record or other communication as being that of the originator, and is entitled to act on that assumption, if :— (a) the addressee has no reason to doubt the authenticity of the data message, electronic document, electronic record or other communication ; or (b) there do not exist any circumstances where the addressee knows, or ought to have known by exercising reasonable care, that the data message, electronic document, electronic record or other communication was authentic. 13. (1) Where the originator has not agreed with the addressee that acknowledgement of receipt be given in a particular form or by a particular method, such an acknowledgement may be given by(a) any data message, electronic document, electronic record or other communication by the addressee, automated or otherwise ; or (b) any conduct of the addressee, sufficient to indicate to the originator that the data message, electronic document, electronic record or other communication has been received. (2) Where the originator has stipulated that data message, electronic document, electronic record or other communication shall be binding only on receipt of an acknowledgement of receipt of such data message, electronic document, electronic record or other communication by him, then, unless acknowledgement has been so received, the data message, electronic document, electronic record or other communication shall be deemed to have never been sent by the originator. Acknowledgement of receipt.