Error message when sending an event confirmation email

If you receive the following below error message when trying to send a confirmation email for an event, it is likely that event emails have been disabled.

To re-enable them, all you need to do is go to Administration > Property and scroll down to 'Property Settings'. Once here, just look for the checkbox shown in the below image, un-tick it and then press the blue 'Update Settings' button at the bottom of the section to save your changes.