thanks @schoen just the info I need to know
Yes that's my plan I have setup a dedicated server and domain & subdomains entirely just for testing Letsencrypt however it's on CentOS and non-standard Nginx - as I want to work on integrating Letsencrypt into my Centmin Mod LEMP web stack. So only way to test right now is manual authentication with a slight change to work with my version of Nginx Manual authenticator - way to automate the ACME Challenge file creation?
So alot of my suggestions would be from a CentOS non-nginx standard install perspective - which I hope my feedback and suggestions can help improve how that works with Letsencrypt client. Unfortunately, I'm no python programmer so it's basically will be feedback from an end user perspective
For email notifications posted a suggestion at Suggestion for email notifications · Issue #741 · certbot/certbot · GitHub