Full disclosure - this is my employer and a product I work on. For enterprises, and folks outside the enterprise communicating with them, commercial products e

Full disclosure - this is my employer and a product I work on. For enterprises, and folks outside the enterprise communicating with them, commercial products exist which effectively allow any sender to use any email address as-if it were a public key, even if the recipient hasn't set up any sort of encryption yet. While compatible with PGP, this is not PGP encryption, but I figured this may be of interest to readers in this thread. White papers can be found at the bottom of this product info page: http://www.voltage.com/products/securemail/ http://www.voltage.com/products/securemail/