Send Email After x-days of Post Approval

Hello,
My blog accepts user posts and its approved by admin. I already have a plugin that will inform admin when post is pending approval and author when post has been approved.

But I need a plugin that can follow up author by sending another automatic email x-days after post approval.
Possible to also set time of email being sent (Assuming post is approved midnight, i wouldn’t like the 24 hours to also be midnight, I will prefer day time house x-days later).

Is this possible with your plugin?

Thanks