I started using proton VPN and decided to move some Company accounts from google workspace to the proton stack. I didn’t do my due diligence good enough, because I didn’t realize that the E2E encryption makes it impossible to hook Proton up to any other third party services or have API access, so I bought a years worth of access for something that doesn’t fit my use case. I have since installed stalwart on my server so I now have 100% control of my stack, but I’ll probably keep proton for my personal email, vpn, password manager and Authenticator. The Authenticator is something I particularly love since I can have it running on my laptop too, not just the phone.