$config = {
   'default' => { # defaults used when no value is given
      'enabled' => 1, # account is not processed if value is 0
      'testing' => '1', # gives a lot of messages, but doesn't do anything
      'source' => { # where is the mail coming from
         'server' => 'localhost', # we're running the script on the mail server itself
         'system' => [ # do not delete any folders with these (case insensitive) names
            'Outbox',
            'Sent Items',
         'INBOX'
         ],
            'ignore' => [ # do not process messages in folders with any of these (case insensitive) names
            'Deleted Messages',
            'Drafts',
            'Junk E-mail',
            'Junk',
            'Trash'
         ],
         'age' => '18M', # anything older than this is ready to be archived, in days. M=monts, Y=years
         'deleteOnSuccess' => '1', # after successful copy, delete message on source
         'deleteEmptyFolders' => '1', # if any folder is empty (except system folders), delete it
         'adminUsername' => 'mailadmin', # if using an admin account to log in
         'adminPassword' => 'some really strong password',
         'adminSeparator' => '*'
      },
      'target' => {
         'server' => 'localhost',
         'hierarchy' => '<path>', # Store message in same path on target that it was on source
         'sleeptime' => '0.5', # time to sleep between messages, in seconds, to allow dovecot to catch up
         'adminUsername' => 'mailadmin',
         'adminPassword' => 'some really strong password',
         'adminSeparator' => '*'
      },
   },
   'accounts' => {
      'user@example.com' => {
         'testing' => '1',
         'source' => {
            'system' => [ # this is ADDED to the default system folders
               'Trash'
            ],
            'server' => 'smtp.example.com', # override default source server
            'username' => 'user@example.com',
            'password' => 'imap password',
            'age' => '1Y', # override default old age limit
            'ignore' => [ # these are ADDED to the default ignore folders
               'ThisIsSpam',
               'ThisIsNOTSpam',
               'ToProcess',
            ],
            'deleteEmptyFolders' => '1',
            'deleteOnSuccess' => '0' # override, leave messages on source after copy
         },
         'target' => {
            'server' => 'archive.example.com', # override target server
            'hierarchy' => '<path>^<year>^<month>', # stored in original path/year/month
            'username' => 'user_archive@archive.example.com',
            'password' => 'imap password'
         },
         'enabled' => 1,
      },
      'user2' => { # this user uses defaults for everything, so all we need to do is put in username and password
         'source' => {
            'username' => 'user@example.com',
            'password' => 'imap password',
         },
         'target' => {
            # in this case, we are using the admin credentials instead of knowing the individual
            # user, so all we need is the username
            'username' => 'user_archive@archive.example.com',
         },
      }
   }
};