Meet Helm, the startup taking on Gmail with a server that runs in your home

There’s no doubt that Gmail has changed the way we consume email. It’s free, it gives most of us all the storage we’ll ever need, and it does a better job than most in weeding out spam and malware. But there’s a cost to all of this. The advertising model that makes this cost-free service possible means some of our most sensitive messages are being scanned for clues about who we are, 

https://arstechnica.com/information-technology/2018/10/meet-helm-the-startup-taking-on-gmail-with-a-server-that-runs-in-your-home/