Acumbamail is definitely one of the best email service providers to hit Appsumo. Deliverability is good, they offer SMTP, and they have a solid email editor. I am paying hundreds per month for Mailchimp and I will be moving my emails over to Acumbamail. The platform is easy to use and the support so far has been great.

Usability is very important to me and this platform is easy to use. I have purchased Encharge, Inbox and Automizy - this tool ranks right up there and is superior in many ways. I look forward to see how this platform develops in the coming years. I purchased the top tier for one of my clients and considering getting another account before this deal closes, so I definitely recommend this tool.