It’s not a plugin to my knowledge, Managed WordPress hosting is a concierge service where all technical aspects of running WordPress is managed by my host (GoDaddy).
https://loveandfoodforeva.com/
So I used a Managed WordPress, and the email is automatically sent to my subscribers when I publish a new post. I do not see any other email plug ins activated on my blog, other than this email template plug in.
I don’t believe I do – how would I find out for sure? Apologies I’m not very technically savy on these things.