Yes, they can and you’ll be informed if they do. If a client of yours decides to delete their Booksy account, you’ll receive a notification and an email with a request to delete all the data regarding this client that you may have stored outside of Booksy - all the data within Booksy will be deleted within 7 days.

• The client’s card won't be deleted, but all the data on them will, for example their name, phone number, email address.
• All appointments scheduled for later than within 7 days will be cancelled automatically, the ones within 7 days won't be affected. 
• Deposits won’t be refunded and any cancellation fees, if due, can still be charged.
• All bookings made by this client for their Family & Friends members that aren’t Booksy users will be cancelled, but bookings of the members that are Booksy users won't be affected.