I want to boost this approach. At first I just whole sale swapped to the full Proton Suite as a G-Suite replacement. But I quickly decided I did not want all my eggs in their basket, so I kept their VPN because it’s got good interfaces for mobile while also playing nice with OpenVPN on Linux, and then I’ve used other solutions for email and cloud and such, self hosting wherever possible.
Woah, I just got an ad for this today, and was intrigued enough to see what their monetization model was (in app purchases/subscriptions for “pro” features) and took a big pass on it.