Does the prospect get a confirmation email?

Yes. After the form is successfully submitted, a confirmation email is sent to the prospect. You can see whether the emails were sent in the campaign detail.

Edit its subject and text in the page editor of the specific campaign, under Email after enquiry is submitted ("E-mail po odeslání poptávky"). Check it together with the questionnaire before launching.

It's enough to confirm you've received the enquiry, say what happens next and add your contact details. Only state a response time you can actually keep.

For example: "Thank you for your enquiry. I'll get back to you by the next business day so we can talk through your situation and agree on next steps."

A disqualified prospect doesn't get an email; they only see the disqualification page. You can edit its text in the editor too.