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What is the Post Office Protocol (POP)?
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In computing, the Post Office Protocol (POP) is an application-layer Internet standard protocol used by e-mail clients to retrieve e-mail from a mail server. Today, POP version 3 (POP3) is the most commonly used version. Together with IMAP, it is one of the most common protocols for email retrieval.
Jan 25, 2021 · Updated on January 25, 2021. Post Office Protocol (POP) is an internet standard that makes it possible to download email messages from an email server to a computer. POP has been updated twice since its origin in 1984 as POP1. Post Office Protocol Version 2 (POP2) was published in 1985.
- Heinz Tschabitscher
Incoming (POP) Server: pop.< name of service >.com. Outgoing Mail (SMTP) Server: smtp.< name of service >.com. See Also. POP, IMAP, and SMTP settings for Outlook.com. POP and IMAP settings for Outlook Office 365 for business. Sync basics - what you can and cannot sync. Learn the difference between IMAP and POP, and when to use each one.
Simply put, POP (Post Office Protocol) is used to retrieve e-mail from a mail server. Most e-mail applications use POP, for which there are two versions: POP2, a standard in the mid-1980s, requires SMTP to send messages. POP3, a newer version can be used with or without SMTP.
POP3 is an older protocol that was originally designed to be used on only one computer. Unlike modern protocols that use two-way synchronization, POP3 only supports one-way email synchronization, only allowing users to download emails from a server to a client.
Feb 12, 2024 · POP and IMAP are both message retrieval protocols that access and present email messages. POP is the simpler and more lightweight of the two, while IMAP has many additional functions that manipulate folders and set message attributes. Message retrieval is just one of several functions in a complete email system.
Feb 27, 2012 · Post Office Protocol (POP) is a type of computer networking and Internet standard protocol that extracts and retrieves email from a remote mail server for access by the host machine. POP is an application layer protocol in the OSI model that provides end users the ability to fetch and receive email.
