Follow the rules for setting up POP3 access5.2.5 but set the folder type to be ``IMAP mailbox''. Then enter the name of your IMAP server, your username and password (or leave it empty to be asked later) for that server and, optionally, the path to the mailbox on the IMAP server. You can leave the path empty, and it will use the default mailbox (INBOX).
If you want to access many IMAP folders on the same server, or a directory there, you can create foldertree entries representing the IMAP server itself (i.e. the top-level directory on it) or a directory on the IMAP server. For these, if not using the Wizard dialog, make sure that the folder properties dialog has the ``is directory'' checkbox ticked, which tells Mahogany that it is not a mailbox file to open, but a directory which can be browsed for entries via the popup menu.