This is good timing actually. I've been self-hosting SimpleLogin for a while but was considering the lifetime subscription to Proton to get it (it comes with ProtonPass but I selfhost VaultWarden).

Last week I logged into my Proton mail that I'd used last year for some government contact to get the dates, and they'd deleted the account for inactivity. Ok, I don't pay, they're entitled. But now I see this and I think maybe I'll save the $150 or whatever it is.