IMAP4 is a mail protocol that allows users to be disconnected from the main messaging
system and still be able to process mail. Users can store messages on a local machine
or on a server.
IMAP has distinct advantages over POP because it allows you manage multiple folders
on the server. Mail can be accessed from different machines, as the mail is hosted
on the server (unlike POP which deletes mail from the server after being accessed)
and allows the user to just download message headers and envelope information, until
the user selects the email to download. This is useful when operating over slow
speed dial-up connections.
IMAP4 can break up and download specific parts of a multi-part email message (MIME).
This means that instead of having to wait for an email with attachments to download,
you can select only the text portion to download, and leave the attachments on the
IMAP4 allows you to have server hosted folders and subfolders.
Post Office Protocol. This is a mail protocol that enables emails to be retrieved
from a remote mailbox. That is, it allows you to collect emails from an hosted account
that you have hosted on a server to your own email software, such as Outlook, Apple Mail
The POP Retrieval Service will download mail via POP from a remote POP server and
deliver to a local mailbox. Users are able to configure their own settings from
. This means you can retrieve your emails from
different mail accounts and view it on their local mailbox without having to log in to each separate account.