Is there a way to add a reminder to the mac email?

ON MAC DESKTOP COMPUTERS...IN THE MAIL APP.....Without sacrificing your privacy, I want to to add reminders as in 'snooze' to an email so that you can go back to it later and reply without forgetting? I don't understand why there is not a relationship between the Mac mail app, Reminders, Calendar (other than adding events from your email), etc.? I use every device in the Apple eco system at home and at work, and yet something so simple is not part of Apple's applications. Apple prides itself in privacy matters, so why should one give it all up for a simple feature?