Which email type should I use – POP3 or IMAP
There are two ways that you can access emails. POP3 (Post Office Protocol 3) is the traditional delivery method which has been used for many years. Messages are delivered to your web mail server, when your selected device program (typically Outlook) on your PC/Mac/laptop requests a download (send/receive action) the message is delivered to your in-box. You therefore have the entire message (and attachments) sitting on your PC/Mac/laptop so you can archive/reply/forward/delete – in other words it is up to you what you do with it.