-Process message/delivery-status and text/rfc822-headers subparts.
+GitHub, Travis, AppVeyor, PyPI.
Python 3.
+Process message/delivery-status and text/rfc822-headers subparts.
+
+
Never decode subparts of multipart/encrypted and multipart/signed messages but
allow processing of headers of the top-level part, ignoring the top-level part
with -I, aborting it with -e or saving the part or subparts with --save-*.