Even with a secretary it would be hard to manage 1,000 e-mails per day, much less 10,000 using the current e-mail clients. This would also be true of outsourcing it to a team of hardworking Estonians, Irish, Indians, or Canadians. Look at electronic discovery techniques (reading e-mail in a lawsuit evidence discovery process) where you may pay dozens of attorneys to sort through e-mail as another limit case of throwing bodies at the problem.