> using the open-source Stalwart stack

This is REALLY cool news. This will make them the second JMAP compatible vendor and the first that didn’t invent it (which is an ick)!

This makes it MUCH more interesting to build JMAP clients. I will most likely subscribe to this just to play around with JMAP because I‘ve been to lazy to set up Stalwart for myself.

I wonder whether they will build a new web front-end, since the existing FOSS ones I’m aware of aren’t all that great.