Setup the list of folders in which maildir mailboxes reside. You can specify the top level folder, a domain folder or individual account folders
Maildir stores new unread email in subfolders called 'new'. use this option to also index email from thee subfolders. usually on reading it will be moved into the 'cur' folder anyway and therefore indexed. If you have
setup a system such that mail accumulates in the new folders and is never 'read' by a client, use this setting to index it regardless. Duplicate email is removed from the index by Message-ID field anyway, but it is more efficient to avoid indexing email twice from the new and cur folders if normal email clients will be used to read the accounts.
Archiver remembers which email accounts and folders have been imported already - use this button to reset and reimport all email