Section 28, The Public Procurement Act, 2016

(1) Subject to this Act, documents, notifications,decisions and other communication referred to in this Act to be submitted by the procuring entity to a bidder or by a bidder to the procuring entity, shall be in writing (2) The Authority may authorise procuring entities to use other forms of communication, including electronic communication, for publication of invitations to bid, transmission of bidding documents, submission of bids, conclusion of contracts, and payment but any such other means of communication shall be such as can preserve a record of the content of the communication, provide an adequate level of security, and does not unduly restrict bidders’ access to the procurement processes and is not inconsistent with this Act or any regulation made under it.