Showing Every Ticket:
First navigate to the Tickets tab and click on the "Advanced" link along the top to display all of the Ticket Search Filters shown here:
Once you click on that link, you will be shown all of the filters like so:
To view every Ticket, set up your filters like in the image above. "Status is Not" should have nothing selected, and "Status is" should also be blank. Because none of the filters have any options selected, none of them will be applied and you will be presented with a list of all of your Tickets.
Exporting Every Ticket:
You can also export all of your Tickets to a CSV file for further sorting/organizing or historical data collection purposes. To do this, navigate to: Admin > Reports > Tickets, then click the "Export to CSV" option. You will be taken to the 'downloads' page where you can then download your generated export file.