There's Open-Xchange. [0][1] My domain registrar offers it for managed email, it works well on both desktop and mobile browsers. Looks like they're not really

There's Open-Xchange. [0][1] My domain registrar offers it for managed email, it works well on both desktop and mobile browsers. Looks like they're not really aiming at the DIY crowd though, I wonder if it's tricky to set up. [0] https://en.wikipedia.org/wiki/Open-Xchange https://en.wikipedia.org/wiki/Open-Xchange [1] https://www.open-xchange.com/products/ox-app-suite/ https://www.open-xchange.com/products/ox-app-suite/