Software

Post Office Protocol - Version 3 (RFC 1939)
This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.

Multipurpose Internet Mail Extensions (MIME) (RFC 2045, RFC 2046, RFC 2047, RFC 2048, RFC 2049)
STD 11, RFC 822, defines a message representation protocol specifying considerable detail about US-ASCII message headers, and leaves the message content, or message body, as flat US-ASCII text. This set of documents, collectively called the Multipurpose Internet Mail Extensions, or MIME, redefines the format of messages to allow for
  1. textual message bodies in character sets other than US-ASCII,
  2. an extensible set of different formats for non-textual message bodies,
  3. multi-part message bodies, and
  4. textual header information in character sets other than US-ASCII.

Internet Message Access Protocol (RFC 2060)
he Internet Message Access Protocol, Version 4rev1 (IMAP4rev1) allows a client to access and manipulate electronic mail messages on a server. IMAP4rev1 permits manipulation of remote message folders, called "mailboxes", in a way that is functionally equivalent to local mailboxes. IMAP4rev1 also provides the capability for an offline client to resynchronize with the server.

Common Internet Message Headers (RFC 2076)
This memo contains a table of commonly occurring headers in headings of e-mail messages. The document compiles information from other RFCs such as RFC 822, RFC 1026, RFC 1123, RFC 1327, RFC 1496, RFC 1521, RFC 1766, RFC 1806, RFC 1864, and RFC 1911. A few commonly occurring headers which are not defined in RFCs are also included. For each header, the memo gives a short description and a reference to the RFC in which the header is defined.

Simple Mail Transfer Protocol (RFC 2821)
This document is a self-contained specification of the basic protocol for the Internet electronic mail transport. It consolidates, updates and clarifies, but doesn't add new or change existing functionality of the following:
  • the original SMTP (Simple Mail Transfer Protocol) specification of RFC 821,
  • domain name system requirements and implications for mail transport from RFC 1035 and RFC 974,
  • the clarifications and applicability statements in RFC 1123, and
  • material drawn from the SMTP Extension mechanisms.

Internet Message Format (RFC 2822)
This standard specifies a syntax for text messages that are sent between computer users, within the framework of "electronic mail" messages. This standard supersedes the one specified in Request For Comments (RFC) 822, "Standard for the Format of ARPA Internet Text Messages", updating it to reflect current practice and incorporating incremental changes that were specified in other RFCs.

Last modified at 2001-06-07.