Unlike POP, IMAP offers a two-way communication between your Hosted mailbox and your e-mail client(s). So, when you perform an action on your mailbox, or a message in your mailbox, it is immediately reflected on the e-mail clients and mobile devices and vice versa (ex: if you log into your Hosted account, create a new folder, and put a message into that folder, this change will instantly and automatically appear in your e-mail client, such as Outlook, and on your mobile device). Also, if you are at work, and you begin a message, and save it, it will still be there when you log in from a different client, say from home.
IMAP provides a better method to access your mail from multiple devices, say from work, home, and your mobile, through two-way syncing capabilities between your mail clients and the Hosted mailbox. However, because IMAP saves all your messages on the server, be sure frequently clean up your mailbox, deleting old messages.
Last update: 12:35 AM Thursday, October 1, 2009