SHA256(CONCAT(user_private_key_salt, user_password, user_email))Storing the keys anonymously like this add an extra layer of protection. In the event that the database storing the keys is compromised, there will be no way for an attacker to determine which key belongs to any specific user. Thus making the process of an attack targeted against a specific user significantly more complex.
€5 per 30 days and you get 10GB of storage space.
Any additional subaccount for family or employees is €4 per 30 days.