To replace everything. Mail, calendar, drive, vpn, password manager, documents etc. What are the pros and cons relative to proton? What are the mobile apps like? What assurances do you have they won’t go full proton in the future? And other questions
Incoming mail: my own server and my own domain (Postfix). Sufficient to receive confirmation mails and notifications.
Outgoing mail: no good/reliable solution yet. I have to send personal e-mail very very rarely.
Calendar: Tasks.org app, used offline (not synced).
Drive: 1TB external HDDs. GPG encrypted backups of important stuff are uploaded regularly to one of the VPSes I have.
VPN: Tor
Password manager: KeepassXC (with backups at 3 places).
Documents: Stored on computer, important ones are backed up. Confidential ones are stored on an encrypted LUKS volume which I only mount when I need something.
In general things I need on the go (e.g Calendar) is on my phone, the rest is at home at my computer. If I need to move data between devices I simply use USB drives. I don’t need no cloud sync of anything.