I understand the attraction. You want to solve this problem as if it was just a straightforward hack. I spent a few days looking at this same problem (harpomail

I understand the attraction. You want to solve this problem as if it was just a straightforward hack. I spent a few days looking at this same problem (harpomail.com) and abandoned it because, in then end, It seemed like I could only provide a false sense of security to people who could conceivably lose their lives because they trusted me. If it had just been a technical risk or a financial risk to myself I would have pursued it, but some risks are heavier than others.