I noticed that staff notification emails have been sent and arrive at the wrong time. For example, I have notifications set for 1 day, 2 hours, and 30 minutes prior to an event. They were arriving 30 minutes or 1 hour earlier than they should have.

I was just notified by Zoho Bookings support that they are including the pre-buffer time, so if you set the pre-buffer to 30 minutes, and the notification email to 30 minutes before the event, the notification email will be sent 1 hour before the event instead of 30 minutes.

This is the wrong way to do this. The pre-buffer should not be included in that time calculation. No other scheduling software does this as far as I'm aware, especially Calendly.

Please let Zoho know if you agree that this is an issue that needs to be fixed by replying here and/or upvoting.