Post Office Protocol
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In computing, the Post Office Protocol (POP) is an application-layer Internet standard protocol used by local e-mail clients to retrieve e-mail from a remote server over aTCP/IP connection. POP and IMAP (Internet Message Access Protocol) are the two most prevalent Internet standard protocols for e-mail retrieval. Virtually all modern e-mail clients and servers support both. The POP protocol has been developed through several versions, with version 3 (POP3) being the current standard. POP3 is used for most webmail services such as Gmail and Yahoo. Contents [hide] * 1 Overview * 2 History * 3 Extensions * 3.1 STLS * 3.2 SDPS * 4 Comparison with IMAP * 5 Dialog example * 6 Server implementations * 7 Related Requests For Comments (RFCs) * 8 See also * 9 References * 10 Further reading * 11 External links |
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[edit]Overview
POP supports simple download-and-delete requirements for access to remote mailboxes (termed maildrop in the POP RFC 's). Although most POP clients have an option to leave mail on server after
References: [edit]IMAP2 The interim protocol was quickly replaced by the Interactive Mail Access Protocol (IMAP2), defined in RFC 1064 (in 1988) and later updated by RFC 1176 (in 1990) [edit]IMAP4rev1 The current version of IMAP since 1996, IMAP version 4 revision 1 (IMAP4rev1), is defined by RFC 3501 (published in March 2003) which revised the earlier RFC 2060.