I don't use Mailchimp and never will. I use sendy.co with amazon and on another system I built my own mailer using Mailgun. The main thing is to ensure you have

I don't use Mailchimp and never will. I use sendy.co with amazon and on another system I built my own mailer using Mailgun. The main thing is to ensure you have an opted-in mailing list. If you spam randoms, all of these platforms will ban you.