If you self host bitwarden/vaultwarden, each client stores an encrypted copy of the database, so even if your server was completely destroyed, you’d still have access to all the accounts you’re saving in it.
If you self host bitwarden/vaultwarden, each client stores an encrypted copy of the database, so even if your server was completely destroyed, you’d still have access to all the accounts you’re saving in it.
Are these emails you need to memorize? Diceware would work.
Otherwise I’d just use something like simplelogin and just have it automatically generate one. Then just save it in your password manager.