Email management system (Mailchimp, etc) anyone have lots of experience? Suggestions on which one to use?

I'd like to be included on any insight shared on this request. I'm just now looking to create/start sending a newsletter too. I signed-up for Mailchimp so far, but haven't begun!

I'd like to be included on any insight shared on this request. I'm just now looking to create/start sending a newsletter too. I signed-up for Mailchimp so far, but haven't begun!