Glossary
========

.. glossary::

   MUA
        Mail User Agent.
        Any program/client/app that handles e-mails for the end user.

   public key
        Public key is used in this spec to refer to an :rfc:`OpenPGP
        "Transferable Public Key"<4880#section-11.1>`.  This is also
        sometimes known as a "keyblock" or "OpenPGP certificate".