IMAP (Internet Message Access Protocol)
is a protocol that allows a user to access electronic mail
messages that are kept on a remote mail server rather than a
local computer. E-mail stored on an IMAP server can be manipulated
from a desktop computer at home, a workstation in the computer
lab or a notebook computer while traveling, without the need to
transfer messages or files back and forth between these computers.
You may want to use IMAP if:
You need access to your email, new and old, at multiple locations, e.g., office, lab, home.
You want backup protection for your email files to be provided automatically by RUCS.
You use POP but use the "leave email on server" option - IMAP handles this situation more efficiently, particularly as the Inbox gets larger.
You used IMAP elsewhere and were satisfied with it.
IMAP is designed for the situation where you need to work with your email from multiple computers, such as your workstation at work, your desktop computer at home, or a laptop computer while traveling.
Messages are displayed on your local computer but are kept and stored on the mail server - you can work with all your mail, old and new, from any Internet computer.
Your archive of mail grows on the mail server - you generally need more storage space than you would need when using POP.
You can create subfolders on the mail server to organize the mail you want to keep, thus keeping your "inbox" small.
Mail kept on the server is backed up nightly by RUCS–Newark.