Privacy-protecting privacy policy and terms of service?

I found this thread with advice on making a privacy policy and terms of service, but so far from looking none are exactly what I’m looking for.

I would like to add a privacy policy that says I will not collect any data and won’t use user’s emails for anything other than sending my newsletter to them. The maximum privacy I could declare for a user, and still send them the newsletter.

The paragraph above is close to what I’m looking for, but I could use an example written in the proper way.

Also for terms of service.

I want to add a terms of service and privacy policy that are as simple as possible, but which mailgun will still accept.

Any help appreciated.