When you set up a budget and alerts, you will receive an email (on the email associated to your ShareGate Overcast account) whenever you hit your set threshold percentage, and/or when you are forecasted to exceed your budget for the month.
Emails are sent by ShareGate Overcast only when an alert is detected.
If an alert is detected, you will receive an email at 7:00AM EST. There is no way to set another time for alerts.