PEM

from The Free On-line Dictionary of Computing (8 July 2008)

Privacy Enhanced Mail
PEM

   (PEM) {Internet} {electronic mail} which provides
   confidentiality, {authentication} and message integrity using
   various {encryption} methods.

   See also {Pretty Good Privacy}.

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

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

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

PEM
       Proton Exchange Membrane fuel cell

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