I switched to Proton a few months ago, I quite like it. The outage a while back and this do worry me a little bit, but for me it's not enough to switch as I don't use the bridge, it has worked really well for me, and don't really like the alternatives for various reasons.

I do think it's relatively early stage. Yes, the email product has been around, but the more business orientated suite of products seems very early.

The email app misses some functionality, but what's there works and looks great. Calendar is progressing nicely. Drive is kinda useless beyond file sharing atm, it really needs a sync app to be useful.

Another qualm I have is that you can't buy extra storage, custom domains, etc. It makes little sense to me, for now it's fine, but at some point it might force me to find a different solution.

They certainly have a lot of work to do, and they need to get a grip on issues like this asap, but I'm willing to wait it out for a bit as I do like the direction, I think there is a lot of potential.

That said I am not sure I would move the company over to Proton like the issue raised, idk if it's ready for that.