How do I let visitors open a ticket without an account?

1. Open Support > Departments and press Edit on the department (for example Sales).
2. Tick Allow submitting without login and save.
3. Share https://your-site/open-ticket, or add it to the Site Menu with Visible to: Everyone.

The visitor gives a name and an email; no client account is made, and your replies go to that email with a private link to the conversation. If the page shows "not found", no department has the box ticked yet.

To ask for more (a server hostname, a root password), see Extra details on tickets.