IMAIL provides a rich set of commands for manipulating messages. Like Rmail, most of these commands are bound to letter keys.
The most important command is M-x imail, which is used to start IMAIL. With no arguments, M-x imail reads the primary folder, selects the first unseen message in the folder, then selects the folder's buffer. If the primary folder is an IMAP folder, M-x imail will connect to the server and check for new mail. If M-x imail is given a prefix argument, it will prompt for the URL of a folder rather than reading the primary folder.
The IMAIL message buffer is put in
IMAIL mode, a
special mode in which most letter commands are defined to have special
meanings. Where possible, the letters chosen for these commands are the
same as those for the corresponding Rmail commands. The command keys
specified in this chapter are for
IMAIL mode, unless otherwise