But you don’t own your data unless you regularly run their nonsense client to tunnel into their servers. So if Proton goes shit tomorrow? All your emails are gone. Not a HUGE issue if you regularly fetch those but… yeah.

Tbf most people don’t download offline copies, they just let all their email live on their provider’s servers and never think twice.

Personally, I’ve used either Outlook or Gmail since 2000 and haven’t ever had an issue getting access to my emails.