https://www.synic.org/donguri-pivacy-policy
> Information We Collect
>
> We collect information necessary to facilitate your use of our services, which may include:
> - Email Addresses and Passwords: For account creation and management. Passwords are securely hashed using SHA256 and a salt.
> - IP and UserAgent Data: For account management, stored in secure, hashed format.
> - Cookies: To maintain your session and remember preferences.

IPとUA以外は取得していない
でいいのかな

メールに紐づけていない状態は、うちとは関係ありませんだったりしなければ