When a ClassPass user books their reservation through ClassPass, they'll also receive a confirmation email from Mariana Tek. This confirmation email will not specify their spot number (if your class is utilizing ‘Pick-A-Spot') unless the email template includes the spot variable--the customer will be notified of their spot number in studio.
If you'd like to include spot numbers in the email, navigate to your templates in Xplor Transactional Emails and add the spot variable.