In Daylite, when you add a Person to an Appointment's Invitee's section, once you save the Appointment Daylite should prompt you to send the invite (see screenshot below):


To fix this issue, follow the steps below:

  1. go to System Preferences
  2. click Security & Privacy
  3. click the Privacy tab
  4. unlock the padlock at the bottom
  5. on the left hand side, scroll down and click Automation
  6. on the right hand side, scroll down and under Daylite check ON Mail (see screenshot below)
  7. close System Preferences