POP vs IMAP
Remember POP and POP3 are the same thing, POP3 is the most recent version of POP, which stands for Post Office Protocol.
POP3 vs IMAP
POP3 downloads the email from a server to a single computer, then deletes the email from the server. On the other hand, IMAP stores the message on a server and synchronizes the message across multiple devices.
Should you be using POP3 or IMAP?
It depends on how you want to access your emails. Generally speaking, IMAP is more powerful and the recommended method for receiving email if you’re working across multiple devices. Alternatively, if you prefer to have all emails accessible offline, and if you have a designated device for email, then POP could be a suitable option.