# POP3: what it is and how it works · Zorraquino
> POP3 is an email protocol that lets a client download messages stored on a mail server to a device.
URL: https://www.zorraquino.com/en/dictionary/internet/pop3.html

# POP3

POP3 is an email protocol that lets an email client download messages stored on a mail server

What it means, how it is used and where it comes up, with its related concepts.

[The whole glossary](https://www.zorraquino.com/en/dictionary)

## What it is and how it works

The name stands for Post Office Protocol, version 3\. The email client connects to the server with a username and password, downloads the messages to the device and, depending on the settings, deletes them from the server or leaves a copy. It is a simple protocol used only for receiving; sending is handled by SMTP.

Unlike POP3, IMAP keeps messages and folders on the server and synchronises them across devices, which makes it the usual choice when people check email on both phone and computer. POP3 is still offered by many providers, mainly for downloading local copies or in older set-ups.

Also known as

Post Office Protocol 3

Topics

[Technology and data](https://www.zorraquino.com/en/dictionary/category/tecnologia-y-datos)

## Related concepts

- [SMTP](https://www.zorraquino.com/en/dictionary/internet/simple-mail-transfer-protocol.html)
- [Email client](https://www.zorraquino.com/en/dictionary/internet/email-client.html)
- [Webmail](https://www.zorraquino.com/en/dictionary/internet/webmail.html)