You can find the status of the SMS appointment reminder for a given appointment by following these steps
1) Within the menu, click Calendar
2) Select one of the events associated with the job and click on the 'See Info' button, which will take you to the invoice.
3) Within the invoice, click on 'See Event'
4) With the event details, you'll see an indication of whether the SMS reminder has been sent or will be sent.
