beginning with "From " (preceded by zero or more '>' characters) have
an additional '>' character added. This reversible escaping
is termed "mboxrd" format and described in detail here:
+
+.nf
+.nh
http://homepage.ntlworld.com/jonathan.deboynepollard/FGA/mail-mbox-formats.html
+.hy
+.fi
+.
.RE
.RS 4
.TP 4
Output the single decoded MIME part N of a single message. The search
terms must match only a single message. Message parts are numbered in
a depth-first walk of the message MIME structure, and are identified
-in the 'json' or
-'text' output formats.
+in the 'json' or 'text' output formats.
+.RE
+
+.RS 4
+.TP 4
+.B \-\-verify
+
+Compute and report the validity of any MIME cryptographic signatures
+found in the selected content (ie. "multipart/signed" parts). Status
+of the signature will be reported (currently only supported with
+--format=json), and the multipart/signed part will be replaced by the
+signed data.
+.RE
+
+.RS 4
+.TP 4
+.B \-\-decrypt
+
+Decrypt any MIME encrypted parts found in the selected content
+(ie. "multipart/encrypted" parts). Status of the decryption will be
+reported (currently only supported with --format=json) and the
+multipart/encrypted part will be replaced by the decrypted
+content.
.RE
A common use of