What does POP mean? Post Office Protocol. Pop3 is the latest version.
What does IMAP mean? Internet Message Access Protocol.
Question: How does POP work?
– one way communication because it deletes the messages once you download them to your local devices and then disconnects them from Mail Server.
-once you downloaded the email, it auto deletes from the email server (however there are some cases, it may not delete/or sync, so emails will be kept in the server)
-if you want to receive your email messages only on one single computer or device, then POP3 is useful.
-if you have received emails using pop3 they can only be accessible to the specific device that you download to and not available to other devices.
-does not require internet connections if you want to access the downloaded emails, Unless you want to retrieve new emails.
-so if you delete a message from one email client, it may not mean that it will be deleted from the other email client.
*If you use POP (Post Office Protocol) on more than one device, those changes don’t appear on every device, and new messages delivered to one device may not be delivered to your other devices.
Question: How does IMAP work?
– it’s a two-way communication because it retrieves your emails and caches it on local devices and keeps the original content on server. Synchronization is both ways.
-able to access any email from any devices unless you delete them from one client.
-so if you delete one email on any email client it will also delete from the server.
-synchronizes all devices.
-you can access your emails on multiple devices simultaneously at any time
-Imap which stores your email in cache only requires an internet connection all the time.
* IMAP (Internet Message Access Protocol) is best if you check email from multiple devices because your messages are stored with your email provider until you delete them. As long as your devices can connect to your email service, your mailbox stays the same on each device.