What role does communication provider play in electronic document management? Is it possible to enter agreement with contractor and transmit documents via e-mail?

Communication provider in electronic document management plays no essential role. According to the Procedure (approved by Order of MF of Russia dated 25.04.2011 №50н), e-invoice interchange is conducted via electronic document management provider only. Provider records invoice receipt and issue dates, ensures document transfer safety, and guarantees their relevance in law, as well as acts as an independent third party in arguments and proceedings.