https://encyclopediaofcybersecurity.com/index.php?action=history&feed=atom&title=Post_Office_Protocol 2026-05-26T21:27:02Z Revision history for this page on the wiki MediaWiki 1.41.1 https://encyclopediaofcybersecurity.com/index.php?title=Post_Office_Protocol&diff=330&oldid=prev 2024-05-09T01:45:26Z

<p>Created page with &quot;== Post Office Protocol (POP) == The &#039;&#039;&#039;Post Office Protocol&#039;&#039;&#039; (POP) is an application-layer Internet standard protocol used by e-mail clients to retrieve e-mail from a mail server. POP operates over TCP/IP connections, normally on port 110. POP version 3 (POP3) is the most recent version in common use and is defined in RFC 1939. === Operation === When an e-mail client connects to a mail server using POP, it typically downloads all the messages stored on the server f...&quot;</p> <p><b>New page</b></p><div>== Post Office Protocol (POP) ==<br /> <br /> The &#039;&#039;&#039;Post Office Protocol&#039;&#039;&#039; (POP) is an application-layer Internet standard protocol used by e-mail clients to retrieve e-mail from a mail server. POP operates over TCP/IP connections, normally on port 110. POP version 3 (POP3) is the most recent version in common use and is defined in RFC 1939.<br /> <br /> === Operation ===<br /> <br /> When an e-mail client connects to a mail server using POP, it typically downloads all the messages stored on the server for the particular user&#039;s e-mail address. Once downloaded, the messages are typically removed from the server, although many POP clients offer the option to leave copies on the server for a specified period of time.<br /> <br /> === Advantages ===<br /> <br /> * POP is widely supported by most e-mail clients and servers.<br /> * It allows users to access their emails even when they are not connected to the internet.<br /> <br /> === Disadvantages ===<br /> <br /> * By default, POP3 downloads messages to the client device, which means if the device is lost or damaged, the messages may be lost unless they have been backed up.<br /> * POP3 does not support server-side folders or organization of emails.<br /> <br /> === Alternatives ===<br /> <br /> Alternative protocols for retrieving e-mails include [[Internet Message Access Protocol]] (IMAP), which allows users to view and manipulate messages without downloading them to their device.<br /> <br /> == See Also ==<br /> * [[Simple_Mail_Transfer_Protocol|Simple Mail Transfer Protocol (SMTP)]]<br /> <br /> == References ==<br /> * [https://tools.ietf.org/html/rfc1939 RFC 1939 - Post Office Protocol - Version 3]<br /> <br /> [[Category:Protocols]]</div>

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