@return default folder for polling mails from (e.g. INBOX), can be <code>null</code>

@return path to directory where the attachments should be stored in

@return default sender (i.e. from) for sending mails, can be <code>null</code>

@return <code>true</code> if attachments of mails should always be stored locally

Populate new {@link Properties} object from input stream with the property file content. <p><strong>Attention:</strong> can be used only once with th

@return default duration between two polling requests from notification service

@return default sender alias (i.e. from alias) for sending mails, can be <code>null</code>