Mailtrack can track emails scheduled to be sent at a later time or date.
How to track scheduled emails with Mailtrack
To track scheduled emails, send an email using Gmail's Schedule Send feature. How to schedule an email to send later using Gmail.
When someone opens the scheduled email, Mailtrack will let you know via the usual methods.
Why is it useful to track scheduled emails?
Sending emails at the right time is crucial for achieving good email response rates.
Mailtrack will tell you if someone's opened/clicked on an email sent at a particular time. So, you'll know for sure if the send time was right.