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Next: Multipurpose Internet Mail Extensions Up: Lecture 5 Previous: Electronic Mail Features
Internet E-mail
RFC 5322 defines format of Internet e-mail as 7 bit octets in 3 parts
Primary headers include:
| To: | e-mail address(es) of primary recipient(s) |
| Cc: | e-mail address(es) of secondary recipient(s) |
| Bcc: | e-mail address(es) of unadvertised secondary recipients |
| From: | person or people who created message |
| Sender: | e-mail address of actual sender |
| Received: | line added by transfer agent along route |
| Return-Path: | added by final transfer agent to give reply path |
Secondary headers commonly used by user agents include
| Date: | date and time message was sent |
| Reply-To: | e-mail address to which replies should be sent |
| Message-Id: | unique number for referencing this message later |
| In-Reply-To: | Message-Id of message to which this is a reply |
| Subject: | short summary of message for one line display |
Users can invent their own headers provided they start with "X-".
| Lecture 5 | XHTML 1.0 | Slide 4 |