Notes for Computer Information Technology 160
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oct31-email2.md 890B

October 31 - Email Continued (Spooky edition)

Overview

  • Anatomy of a letter
    • Envelope
      • FROM:
      • TO:
    • Content
  • mbox
  • SMTP
  • IMAP/POP
  • MUA, MTA, MOA, MSA
  • WIRE Protocol
From:
DATE:
Subject:
Reply-To: one or more emails
Message-To:
Precedence: "bulk | junk | list"
Sender:
In-Reply-To: links to Message-To for threads
Content-Type: like shabang, emails can contain text, html, images, and more

MIME types - Multipurpose Internet Mail Extentions

  • Content-type: type/subtype

Some types are:

text/plain
text/html
image/jpeg
image/png
audio/mpeg
audio/ogg
audio/*
video/mp4
application/*
application/json
application/javascript
application/ecmascript
application/octet-stream
…