I have modified the $conf['app']['adminEmail'] = 'email@example.com';
However when I was testing I was testing with a different email and now no matter how many times I change this email around the new reservation always sends the email to the first test email I had put in there! I have even restarted the server! As a workaround I now have this hardcoded in Reservation.class.php in line 1205. Instead of:
$adminemail = $this->sched['adminemail'];
I now have
$adminemail = 'firstname.lastname@example.org';
Now it works!
Not sure where the issue can be.