D. J. Bernstein
Internet mail
Internet mail message header format
Field name index
Codes:
- [822]: the field was specified in RFC 822.
- [1327]: the field was specified in RFC 1327.
- [spec]: link to a specification.
- [info]: link to a source of further information.
- tokens: the field value is, at least in theory,
tokenizable.
- mailbox: the field is part of a format for storing messages on disk;
it does not normally appear in transit.
- user: the field is typed by the user in an outgoing message,
but is immediately stripped by the MUA;
it is a way for the user to control the MUA.
Resent-* fields are not listed.
822 promised that the IETF
would never define field names beginning with X-.
It did not prohibit use of non-X names by other organizations.
Acknowledge-To:
Also-Control:
Alternate-Recipient:
Apparently-To:
Approved:
Article-Names:
Article-Updates:
Auto-Forwarded:
Autoforwarded: [1327]
Auto-Submitted:
Bcc: user tokens [822]
Cc: tokens [822]
Comments: [822]
Confirm-Delivery:
Confirm-Reading:
Content-Base:
Content-Conversion:
Content-Description:
Content-Disposition:
Content-ID:
Content-Identifier: [1327]
Content-Language:
Content-Length: mailbox
Content-Location:
Content-MD5:
Content-Return:
Content-SGML-Entity:
Content-Transfer-Encoding:
Content-Type:
Control:
Conversion: [1327]
Conversion-With-Loss: [1327]
Date: tokens [822]
Deferred-Delivery: [1327]
Delivered-By-The-Graces-Of:
Delivered-To:
Delivery-Date: [1327]
Discarded-X400-IPMS-Extensions: [1327]
Discarded-X400-MTS-Extensions: [1327]
Disclose-Recipients:
Disposition-Notification-To:
Distribution:
DL-Expansion-History: [1327]
Encoding:
Encrypted: [822]
Envelope-Recipient:
Envelope-Sender:
Errors-To:
Expires:
Expiry-Date: [1327]
Fax:
Fcc: user
Followup-To:
For-Comment:
For-Handling:
From: tokens [822]
Generate-Delivery-Report:
Importance: [1327]
In-Reply-To: tokens [822]
Incomplete-Copy: [1327]
Keywords: [822]
Language: [1327]
Latest-Delivery-Time: [1327]
Lines:
List-Archive:
List-Help:
List-ID:
List-Owner:
List-Subscribe:
List-Unsubscribe:
Mail-Followup-To: tokens
Mail-Reply-To: tokens
Mail-System-Version:
Mailer:
Mailing-List:
Message-ID: tokens [822]
Message-Type: [1327]
MIME-Version:
Newsgroups:
Notice-Requested-Upon-Delivery-To: tokens [spec]
Obsoletes: [1327]
Organization:
Original-Encoded-Information-Types: [1327]
Originating-Client:
Originator-Info:
Originator-Return-Address: [1327]
Path:
Phone:
Precedence:
Prevent-Nondelivery-Report:
Priority: [1327]
Received: tokens [822]
References: tokens [822]
Reply-By: [1327]
Reply-To: tokens [822]
Requested-Delivery-Method: [1327]
Return-Path: tokens [822]
Return-Receipt-To: [info]
See-Also:
Sender: tokens [822]
Sensitivity: [1327]
Status: mailbox
Subject: [822]
Summary:
Supersedes:
Telefax:
To: tokens [822]
Versions:
X-Confirm-Reading-To:
X-Mailer:
X-MS-Embedded-Report:
X-Newsreader:
X-PMRQC:
X-Priority:
X-Sender:
X-Status: mailbox
X-X-Sender:
X400-Content-Return:
X400-Content-Type: [1327]
X400-MTS-Identifier: [1327]
X400-Originator: [1327]
X400-Received: [1327]
X400-Recipients: [1327]
Xref: