1. To set-up an automatic email to notify owners of a cancelled booking, you need first to set up a Cancellation email template. You can use tags to populate booking specific information if required.

2. You should then go to Emails/Letters- Automated Emails, and add your Cancellation template to a group, 

then edit the letter and set the criteria for the auto email as pictured below.

3. Make sure to tick the box at the bottom next to 'Owner' in order to send it to the owner only. 

4. When you have done this, on the Automated Emails/SMS page again, click the 'add to existing bookings' button in the top right.