IMAP (short for Internet Message Access Protocol) is an internet protocol that lets you sync your email inbox across multiple devices. Most popular email apps, like Gmail and Outlook, use IMAP servers ...

Unlike POP access, IMAP is a two-way syncing mechanism between your email client and Gmail. That is, if you mark a message as read in Thunderbird, for example, it will appear as read in Gmail.

Why is IMAP better than POP? POP downloads and copies new messages to your local inbox. With POP you can download once and disconnect from the server, which is its one advantage. But you cannot ...

IMAP vs. POP: Functionality IMAP creates a single central server to sync emails across all your devices. For example, if you use a desktop, tablet, or smartphone, the IMAP protocol syncs your ...

For the outgoing server, enter smtp.comcast.net as your server, your user name, and your password, then click Create. This places the Comcast IMAP server into the list of accounts for Mail.

Running out of space on the IMAP server Nick Greeves points out that messages can sometimes be dropped from an IMAP server's "Sent" box if space is running out on the physical volume.

Google's server which enables IMAP support for Gmail is down and causing issues for users of its email service.

In both Windows and Linux boxen I set that as both my IMAP server and my SMTP. The box will then send and receive through ports 25 (smtp) and 143 (imap).