Fastmail has "masked emails" with 1Password subscription. You can generate the emails out of fly. I use specific email aliases. I don't think the 1Password sub

Fastmail has "masked emails" with 1Password subscription. You can generate the emails out of fly. I use specific email aliases. I don't think the 1Password subscription makes any sense, but I am willing to support BitWarden. It works well while protecting my real email account. Why use Mozilla services?