What is POP3 Mail Protocol?

The POP3 (Post Office Protocol 3) is used to receive a mail from a remote server and is the 3rd version of the e-mail protocol.

What is POP3 Mail Protocol?

What is POP3 and How it Works?

POP3 allows you to receive e-mails from an e-mail server. When you download an email with this protocol, it stores locally even if you delete your it from the server.

If you access your account from multiple locations using this protocol, you won’t be able to see emails you’ve previously received. The messages you download store on one device only.

It is not recommended for small businesses due to the high storage requirements of POP3. The POP3 email is generally a useful protocol for ISPs.

The SMTP protocol uses when the user sends a new E-mail. Also, the connection between the e-mail servers controls by SMTP. When a user wants to read the newly received e-mail, they will be able to read the e-mail via POP or IMAP protocols. As a result, POP is an E-mail retrieval protocol.

POP3 uses TCP port 110 by default. The TCP 995 port can also be used for e-mail security and also described in RFC 1939.

How Does the Post Office Protocol Work?

To better understand how the POP3 mail protocol works, you can test Windows Mail application or a 3rd party software by configuring it with this mail protocol.

How POP works briefly: Received emails are deleted from the server and stored on the logged-in device. As a result, when you access your account from another location, you won’t be able to see emails you’ve previously received.

   Final Word


In this article, we have briefly talked about the post office prototype. IMAP is an Email service and POP is an Email service. It recommends using the IMAP protocol instead, as the storage capacity of the computer that will be using this protocol will severely be filled. Thanks for following us!

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