The CEO of a certain company set multiple important public email accounts to autoreply to all messages with the poop emoji. Importantly, there is no indication that it's an autoreply. Someone had the funny idea to send the account an email with a contract to sell the company for a small (but not unreasonable) amount along with "If you agree, reply with the poop emoji". And the account replied as expected.
Practically, I'm sure this won't work. But, what is the legal explanation for why not? Why is this reply not considered an agreement to sell the company?
Fun follow-up: Could someone get out of a contract by proving that their email agreeing to it (e.g., "Yes, I agree to the contract") was an autoreply?
(assuming US laws)