Mechanism that prevents an email send until it is fully approved.

Recently, I had an issue where I forgot to hit approve button on the current email and when I sent it off, it sent the last months email. Our team clones the previous email, click unapproved and create a draft of the email as the template stays the same each month. I wasn't sure if there were others who have had similar issues and I thought it might be nice to have an error message or mechanism that would not allow the user to hit send until the email has been fully approved.  Thank you!