1 addr-spec alice@example.com &amp; &gt; &lt; & application/pkcs7-mime; smime-type="enveloped-data" application/pkcs7-mime; smime-type="signed-data" ARC-Authentication-Results Archived-At A Bcc bob@example.org bodypart B [("Cc", "alice@example.net"), ("Subject", "Thursday's meeting")] Cc: Cc "cipher" cipher class "clear" clear Comments confmap[(name,val_in)] confmap Content-Disposition: attachment Content-* Content-Type: message/rfc822 Content-Type crypto C ct Date Date: Wed, 11 Jan 2023 16:08:43 -0500 display-name div DKIM-Signature domain D encoded-word encrypted-only E example.com false field-name From: Alice <alice@example.net> From: Bob <bob@example.net> From: <alice@example.com> From: <bob@example.org> From FWS genouter genprotected G > h1 (h1,v1) Handling the Jones contract hcp_baseline hcp_example_hide_cc hcp("From", val_in) hcp(h,v) hcp(name, val_in) -> val_out hcp_no_confidentiality hcp_shy hcp header-protection-legacy-display (header, value) (h,newval) hp="cipher" hp="clear" hp-legacy-display="1" hp-legacy-display HP-Outer: From: <alice@example.com> HP-Outer hp-outer-value hp hp= h H (h,v) -> result (h, v) (h,v) imap://bob@header-protection.cmrg.net/ In-Reply-To: <20230111T210843Z.1234@lhp.example> In-Reply-To is_sig_valid Keywords ldlist legacy List-Archive List-Help List-Id List-Post List-Subscribe List- List-Unsubscribe local-part <body> <div> <pre> < Mail-Followup-To Message-ID: <20230111T210843Z.1234@lhp.example> Message-Id Message-ID message/rfc822 MIME-Version msg multipart/alternative multipart/mixed multipart/related name name name (name,val_in) newbody newheaders newval N null obs-unstruct origbody origheaders output Received RecipientInfo record References: <20230111T210843Z.1234@lhp.example> References refheaders refmsg refouter refprotected Reply-To respond(refouter) respond(refprotected) respond response_hcp(h,v) response_hcp result severity #183 serious signed-and-encrypted signed-only signed Subject: Handling the Jones contract Subject: Re: Handling the Jones contract ASAP ("Subject", "Re: Handling the Jones contract") -> "Re: [...]" Subject: Re: Handling the Jones contract Subject: Re: [...] Subject: [...] Subject: Subject text/html text/plain To: Alice <alice@example.net> To: Bob <bob@example.net> To true [...] unprotected unstructured User-Agent v1 val_in val_out VCHAR v WSP Y Z