POP–With POP, email messages and attachments are removed from the mail server after you get them on your device.To keep messages on the server so you can get them from any of your devices at any time, use IMAP IMAP–With IMAP, email messages and attachments stay on the mail server even after you open them on your device, for example a tablet or phone.What's the difference between IMAP and POP? Depending on the client, they can use IMAP or POP to sync their mail. Your users can send and receive Gmail with their preferred third-party email client.
