Hunter discussed the proposed company in a November 2014 email with his business partner and Biden family friend Jeff Cooper, a lawyer and entrepreneur.
The intentions were stopped by Beau's tragic death in 2015 from brain cancer, setting the entire family on a drastically different path.
Had Beau not passed away, the emails imply that Joe Biden might have quit politics and entered the DC 'swamp' of politically-tied lawyers and highly-paid consultants and lobbyists – a world he has decried in speeches.
The email further raises questions over the president's assertion that he never talked business with Hunter.
This case has come under growing scrutiny after emails from Hunter's abandoned laptop showed many examples where Joe seemed to be involved in business meetings relating to Hunter – both throughout his tenure as vice president and after he left office.
A now-infamous email between Hunter and his business partners in a multi-million-dollar deal with Chinese oil giant CEFC, consultant James Gilliar set out potential terms of the deal and listed '10 held by H for the big guy?'
The mysterious phrase from the May 2017 message has been described as a suggestion for Hunter to hold 10% of the shares in the joint venture on behalf of his father, who is referred to as 'the big guy' in several other emails on the laptop.
The president has denied this interpretation.
Different emails show Joe attended a private dinner with Hunter and his business partners and potential clients while he was vice president.
Hunter wrote to a friend before the 2015 Washington DC dinner that it was 'ostensibly to discuss food security', though was in fact a chance to introduce his possible clients and partners to his powerful father.
Hunter arranged White House and vice-presidential residence meetings with his dad for two Mexican billionaires with whom he was plotting multi-million-dollar business ventures – and that Joe took Hunter and his business partner on Air Force 2 to Mexico amid those deals.
And according to the Daily Mail, former FBI director Louis Freeh, who represented a criminal Romanian property tycoon alongside Hunter, talked with Joe while the VP was still in office regarding the Biden father and son joining his consultancy firm in 2017.
The White House has declined to respond to any questions regarding any of the incidents.
Hunter discussed his proposed new Biden family company in an email with Cooper dated November 20, 2014, with the title 'Firm'.
He set out 'ball park' annual overheads for the consultancy shop totaling $1.2 million including a $500,000 salary for his brother Beau.