Daninor
yes, that's the process. I assume you are using the supported PHP version and web server listed at https://docs.osticket.com/en/latest/Getting%20Started/Installation.html
for email, settings look at this:https://docs.osticket.com/en/latest/Getting%20Started/POP3-IMAP%20Settings.html
or this post: https://howtohelpdesk.com/osticket-email-settings/