There’s not a single chance you would get anyone of your subscribers or customers to do what they do not want to do.
Your only shot is planting ideas, insinuation . . . and that means the ideas belong to them.
You must respect the human need for assertion of will, and fight the urge to force your will on them because it will lead you to the delete and unsubscribe button FAST.
The more wishes you can grant, the more successful you’ll be in the business of email marketing. I assure you.
So Get on With It!