• 6 RFCs for sending, receiving, and parsing email.
• 6.1 Send (SMTP) Email RFCs
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• 6.1.1 RFC 2821 Simple Mail Transfer Protocol (SMTP)
• 6.1.10 RFC 2852 Deliver By SMTP Service Extension
• 6.1.11 RFC 2034 SMTP Service Extension for Returning Enhanced Error Codes
• 6.1.12 RFC 3463 Enhanced Mail System Status Codes
• 6.1.13 RFC 3461 SMTP Service Extension for Delivery Status Notifications
• 6.1.14 RFC 3462 Multipart/Report Content Type for the Reporting of Mail System Administrative Messages
• 6.1.15 RFC 2554 SMTP Service Extension for Authentication
• 6.1.16 RFC 2505 Anti-Spam Recommendations for SMTP MTAs
• 6.1.17 RFC 2442 Batch SMTP Media Type
• 6.1.18 RFC 1047 Duplicate messages and SMTP
• 6.1.2 RFC 974 Mail routing and the domain system (MX records)
• 6.1.3 RFC 1869 SMTP Service Extensions
• 6.1.4 RFC 1870 SMTP Service Extension for Message Size Declaration
• 6.1.5 RFC 1652 SMTP Service Extension for 8bit-MIMEtransport
• 6.1.6 RFC 3030 SMTP Service Extensions for Transmission of Large and Binary MIME Messages
• 6.1.7 RFC 1846 SMTP 521 Reply Code
• 6.1.8 RFC 1985 SMTP Service Extension for Remote Message Queue Starting (ETRN)
• 6.1.9 RFC 2645 On-Demand Mail Relay (ODMR) SMTP with Dynamic IP Addresses
• 6.2 Receiving (POP3/IMAP) Email RFCs
• 6.2.1 RFC 2298 Extensible Message Format for Message Disposition Notifications (MDNs)
• 6.2.10 RFC 1731 IMAP4 Authentication Mechanisms
• 6.2.11 RFC 2342 IMAP4 Namespace
• 6.2.12 RFC 2359 IMAP4 UIDPLUS extension
• 6.2.13 RFC 3348 IMAP4 Child Mailbox Extension
• 6.2.14 RFC 2683 IMAP4 Implementation Recommendations
• 6.2.15 RFC 2971 IMAP4 ID extension
• 6.2.16 RFC 3502 IMAP MULTIAPPEND Extension
• 6.2.17 RFC 3503 Message Disposition Notification (MDN) profile for IMAP
• 6.2.18 RFC 3516 IMAP4 Binary Content Extension
• 6.2.19 RFC 2476 Message Submission
• 6.2.2 RFC 1939 Post Office Protocol - Version 3 (POP3)
• 6.2.20 RFC 2244 ACAP -- Application Configuration Access Protocol
• 6.2.21 RFC 1056 PCMAIL: A distributed mail system for personal computers
• 6.2.22 RFC 1204 Message Posting Protocol (MPP)
• 6.2.23 RFC 1339 Remote Mail Checking Protocol
• 6.2.3 RFC 1734 - POP3 AUTHentication command
• 6.2.4 RFC 1957 Some Observations on Implementations of POP3
• 6.2.5 RFC 2384 POP URL Scheme
• 6.2.6 RFC 2449 POP3 Extension Mechanism
• 6.2.7 RFC 3206 SYS and AUTH POP Response Codes
• 6.2.8 RFC 2195 IMAP/POP AUTHorize Extension for Simple Challenge/Response
• 6.2.9 RFC 3501 Internet Message Access Protocol - version 4rev1(IMAP4)
• 6.3 Parsing (MIME/Multipart Messages) Email RFCs
• 6.3.1 RFC 2822 Internet Message Format
• 6.3.10 RFC 2049 MIME Part 5: Conformance Criteria and Examples
• 6.3.11 RFC 2183 Communicating Presentation Information in Internet Messages: The Content-Disposition Header
• 6.3.12 RFC 2557 MIME Encapsulation of Aggregate Documents, such as HTML (MHTML)
• 6.3.13 RFC 2854 text/html Media Type
• 6.3.14 RFC 2392 Content-ID and Message-ID Uniform Resource Locators
• 6.3.15 RFC 2646 Text/Plain Format Parameter
• 6.3.16 RFC 2387 MIME Multipart/Related Content-type
• 6.3.17 RFC 3066 Tags for the Identification of Languages
• 6.3.18 RFC 2231 MIME Parameter Value and Encoded Word Extensions: Character Sets, Languages, and Continuations
• 6.3.19 RFC 2017 Definition of the URL MIME External-Body Access-Type
• 6.3.2 RFC 2076 Common Internet Message Headers
• 6.3.20 RFC 2388 Returning Values from Forms: multipart/form-data
• 6.3.21 RFC 2376 XML Media Types
• 6.3.22 RFC 1556 Handling of Bi-directional Texts in MIME
• 6.3.23 RFC 1524 User Agent Configuration Mechanism For Multimedia Mail Format Information
• 6.3.24 RFC 1896 MIME text/enriched content-type
• 6.3.25 RFC 1428 Transition of Internet Mail from Just-Send-8 to 8bit-SMTP/MIME
• 6.3.26 RFC 1740 MIME Encapsulation of Macintosh Files (MacMIME)
• 6.3.27 RFC 1741 MIME Content Type for BinHex Encoded Files
• 6.3.28 RFC 1767 MIME Encapsulation of EDI Objects
• 6.3.29 RFC 1844 Multimedia E-mail (MIME) User Agent Checklist
• 6.3.3 RFC 1153 Digest message format
• 6.3.30 RFC 1864 Content-MD5 Header Field
• 6.3.31 RFC 2077 The Model Primary Content Type for MIME
• 6.3.32 RFC 3023 XML Media Types
• 6.3.4 RFC 1505 Encoding Header Field for Internet Messages
• 6.3.5 RFC 1049 Content-type header field for Internet messages
• 6.3.6 RFC 2045 MIME Part 1: Format of Internet Message Bodies
• 6.3.7 RFC 2046 MIME Part 2: Media Types
• 6.3.8 RFC 2047 MIME Part 3: Message Header Extensions for Non-ASCII Text
• 6.3.9 RFC 2048 MIME Part 4: Registration Procedures

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