Hey, don't mean to be promotional, but I just built a platform for email marketing that uses machine learning for automated split testing and optimization (just wrote a post about it here: <a href="https://www.optimail.io/blog/move-beyond-ab-testing-email-campaign-optimization" rel="nofollow">https://www.optimail.io/blog/move-beyond-ab-testing-email-ca...</a>). I'd be happy to answer any questions about it!
I've used MailChimp for an e-commerce. Reasonable prices, great design and straightforward usage. The analytics was useful and if you need more you can connect to Google analytics. Tons of integrations available.<p>The built-in design editor was infuriating in how it handled copying elements but overall it was easy to use.