Announce the email policy you have just developed. You are not convincing: you are announcing. Though, you should be tactful and professional. Keep in mind: some of those folks have been around long time and some are starting their very first jobs.
Describe why you select to highlight these principles and why you wrote the message as you did. Describe your objectives and how you utilized background readings.
Create logical flow, ease of reading, references to articles, tone of message, understanding of concepts, and tasteful creativity.