The POP Protocol Explained

What is POP?

New mails are downloaded from the POP server to the mail client. The client can tell the server to delete the messages. Mails are always downloaded to the Inbox. The server doesn't know anything about if the message is read or unread. The intent of POP is to have one main mail client that is used to interact with the mail.

What are the benefits of POP?

It's old and simple.

What are drawbacks of POP?

POP is really old. Nobody has only one computer anymore. I want to read mails in the office, at home, on my mobile, during holiday (not really). Even if I leave the messages on the server with POP I need to have a mailbox structure and I need to know which message are already read. This was the reason for the creation of IMAP.

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