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
Self host email and nextcloud. Keepass for pw manager. I use davx5 and fossify calendar for mobile calendar. Nextcloud mobile just manages your files and doesn’t have the other Nextcloud apps.
Idc about Proton either way though. Imo if proton was fine for you before then it’s fine for you now. I just prefer to have control over my own services.