Right now there is no easy way to check when a customer added Extras or Add-ons to his booking. The Email Notification can only include the main Service, but nothing about the Extras as there is no tag for this.
It is a shame as it requires the provider to manually check each booking on Simplybook rather than just having an email with all info.
Having a tag/vars that can be used in emails templates would solve this easily, and the emails sent to the provider and the client would include all info (Main Service, Extras, Add-ons...).
I need it too