V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

PEM
       Privacy Enhanced Mail (PSRG, RFC 1421/1422/1423/1424)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

PEM
       Proton Exchange Membrane fuel cell


The Free On-line Dictionary of Computing (30 December 2018):

Privacy Enhanced Mail
PEM

   Internet electronic mail which provides
   confidentiality, authentication and message integrity
   using various encryption methods.

   See also Pretty Good Privacy.

   (2009-06-03)