HelpDeskZ supports IMAP fetching, this allows the auto-creation of tickets from incoming emails to a set email address.
In Staff Panel, go to Setup -> Email addresses.
Add a new email address or edit the email for IMAP configuration.
Go to Incoming tab and select IMAP
Complete your configuration with the Host, Port, Username and Password
Add a cron job to execute your command every minute or 5 minutes. It depends the timeframe you want to check emails.
Command: /usr/local/bin/php /PATH_TO_HELPDESK/index.php imap_fetcher
Many hosts uses the IMAP port 993 by default