<p>In order to pursue our legitimate interest of preventing the creation of accounts by spam bots or human spammers, ProtonMail uses a variety of human verification methods. You may be asked to verify using either reCaptcha, Email, or SMS. IP addresses, email addresses, and phone numbers provided are saved temporarily in order to send you a verification code and to determine if you are a spammer. If this data is saved permanently, it is always saved as a cryptographic hash, which ensures that the raw values cannot be deciphered by us.