This gem seems to be out in the wild since a while. As I had the chance using it on my own recently I could not resist sharing it here.
Many other players in that field make it relatively complicated and cost-intense to run a business email service where even I could do the full setup with this one in no time (including MX records + SPF/DKIM on an externally hosted domain).
Also it seems nicely integrated with the other parts of ZOHO which I did not test yet.
Competivie pricing, including free tier!
I have been using Zoho Mail since 2014 and have never encountered any issues. I am extremely pleased with the product, and their customer service is remarkably helpful and responsive. Thank you!
Wunderpresentation