OpenPGPOpenPGP Email encryption. For all operating systems. Standing the test of time. OpenPGP is the most widely used email encryption standard. It is defined by the OpenPGP Working Group of the Internet Engineering Task Force (IETF) as a Proposed Standard in RFC 9580. OpenPGP was originally derived from the PGP software, created by Phil Zimmermann. Although OpenPGP’s main purpose is end-to-end encrypte
