CUNY Academic Commons

"Quick question: I notice on my Medieval Studies commons site dashboard, I still have Mail Poet. But when I tried to search for the Mail Poet plugin in the American Studies site dashboard, I couldn’t find it. Could it have to do with the fact that I have Jetpack installed and running on the Medieval one but not on the American Studies site?
I don’t plan to use Mail Poet to send anything, just use it to create a newsletter using the wordpress posts and copy and paste everything over to Mail Chimp. I think Mail Chimp is a safer option since its on a third party site and I don’t have to worry about it malfunctioning all of a sudden.
Would appreciate your insight"