pretty Easy privacy (p≡porpEp) was a pluggable data encryption and verification system that provided automatic cryptographic key management through a set of libraries for written digital communications.
p≡p was advertised as being easy to install, use, and understand. p≡p did not depend on any specific platform, message transport system (SMS, email, XMPP, etc.), or centrally provided client–server or "cloud" infrastructures; p≡p is fully peer-to-peer by design.[7]
Keys are exchanged opportunistically by transferring via email.[8]
Enigmail announced its support for the new "pretty Easy privacy" (p≡p) encryption in a joint Thunderbird extension to be released in December 2015.[9] Patrick Brunschwig, the head of Enigmail, announced that p≡p core functionality was implemented in Enigmail in October 2016, ready for the Mozilla Festival then taking place in London.[10]
In July 2020, Thunderbird 78 dropped support for the Enigmail Add-On.[11] Thunderbird 78 includes OpenPGP functionality and no longer requires the installation of external software.[12]
The Internet Society Switzerland Chapter (ISOC-CH) and the Swiss p≡p foundation teamed up[13] to implement privacy-enhancing standards at the basic level of internet protocols, and document them in the work of the Internet Engineering Task Force (IETF).
^Walfield, Neal (20 December 2016). "Op-ed: Why I'm not giving up on PGP". Ars Technica. Archived from the original on 18 April 2018. Retrieved 17 May 2018. the pretty Easy privacy (p≡p) project are working on opportunistically transferring keys via e-mail