POP (Post Office Protocol) Basics in Email GA S REGULAR Menu Lifewire Tech for Humans Newsletter! Search Close GO Email, Messaging, & Video Calls > Email 84 84 people found this article helpful

POP (Post Office Protocol) Basics

How your email program gets the mail

By Heinz Tschabitscher Heinz Tschabitscher Writer University of Vienna A former freelance contributor who has reviewed hundreds of email programs and services since 1997. lifewire's editorial guidelines Updated on December 12, 2019 Tweet Share Email Photoplotnikov/Getty Images Tweet Share Email Email Yahoo! Mail Gmail If you use email, you've probably heard someone talking about "POP access" or were told to configure the "POP server" in your email client. 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 allows e-mails to be downloaded from the server's inbox to your computer. In addition, your emails are available even when you're not connected to the server. It's important to note that IMAP, (Internet Message Access Protocol) provides more complete remote access to traditional email. In the past, fewer Internet Service Providers (ISPs) supported IMAP because of the large amount of storage space needed on the ISP's hardware. Today, e-mail clients support POP, but also employ IMAP support.

The Purpose of Post Office Protocol

If somebody sends you an email it usually cannot be delivered directly to your computer. The message has to be stored somewhere, though. It has to be stored in a place where you can pick it up easily. Your ISP (Internet Service Provider) is online 24 hours per day seven days of the week. It receives the message for you and keeps it until you download it. Let's suppose your email address is look@me.com. As your ISP's mail server receives email from the internet it will look at each message, and if it finds one addressed to look@me.com that message will be filed to a folder reserved for your mail. This folder is where the message is kept until you retrieve it.

What the Post Office Protocol Allows You to Do

Things that can be done via the POP include: Retrieve mail from an ISP and delete it on the server.Retrieve mail from an ISP and let it remain on the server.Ask whether new mail has arrived.Peek at a few lines of a message to see whether it is worth retrieving. If you leave all your mail on the server, it will pile up there and eventually lead to a full mailbox. When your mailbox is full, nobody will be able to send you an email. Was this page helpful? Thanks for letting us know! Get the Latest Tech News Delivered Every Day Subscribe Tell us why! Other Not enough details Hard to understand Submit More from Lifewire How to Use AOL Mail Through an Email Client Internet Speed Test Sites (Last Updated October 2022) The 5 Best Secure Email Services for 2022 How to Enable IMAP in Zoho Mail What Is an Email Client? What Is a Public IP Address? (and How to Find Yours) macOS Mail: How to Keep Emails on the Server What Are the SMTP Settings for Yahoo Mail? What Is Email aka Electronic Mail? Guide to Yahoo Mail IMAP Settings How to Delete an Email Account on an iPhone How to Access Yahoo Mail With Outlook How to Access Your AIM Mail Account via POP or IMAP Here Are the IMAP Settings You Need to Set Up Gmail How to Use SSL With an Email Account in macOS Mail What Do SMTP Error Messages Mean? Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up By clicking “Accept All Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. Cookies Settings Accept All Cookies