What is POP in email?

POP, or Post Office Protocol, is a form of email protocol which allows users to retrieve emails from an email server. With POP3, the most recent interation, emails are sent straight from an email server to your email client, after which they are deleted from the server. The most common alternative is IMAP, which by contrast, stores all emails on one server, which can be retrieved by any device.

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• Email protocol
• IMAP
• SMTP