Look into the protocol for OTR: http://en.wikipedia.org/wiki/Off-the-Record_Mess...

zain on April 25, 2009 | parent | context | favorite | on: Ask HN:Plausibly deniable email

Look into the protocol for OTR:

It is used for plausible deniability in a secure IM conversation, but I don't see any reason it couldn't be applied to email.