Change a Joomla component - repost

I am using a event component Matukio. I want to following to things: - Customers receiving an email when the register for an event. In this mail you only can read information about the event and the name and email of the customer. I want also the postal, adress, country etc in this mail. - Customers receiving an cancel email if I delete the register customer from an event. I want to disable this.