Gmail users can use either POP normal mode or recent mode to sync their mail. If you're syncing your mail to one mail client, you should use normal mode. If you're syncing mail to a few different mail clients, then you should use recent mode. ... Once a message is downloaded, Gmail marks it as 'popped'.

Should I use POP or IMAP for Gmail?

For most users, IMAP is a better choice than POP. POP is a very old way of receiving mail in an email client. It only lets you download your Inbox on your computer, and not any other folders. When an email is downloaded using POP, it is usually then deleted from Fastmail.

Do I need POP and IMAP enabled?

Choose a POP setting if you want to save storage space, need constant access to your email and need to access mail from only one device. If you're using multiple devices to check and manage email, IMAP is the way to go. IMAP enables users at different locations, using different devices, to manage the same inbox.