I meant using TOTP (app-based) two-factor authentication for securing your DNS provider and domain registrar accounts. The reason for not using SMS-based two-fa

I meant using TOTP (app-based) two-factor authentication for securing your DNS provider and domain registrar accounts. The reason for not using SMS-based two-factor authentication is that it is not very secure https://techcrunch.com/2016/07/25/nist-declares-the-age-of-sms-based-2-factor-authentication-over/ https://techcrunch.com/2016/07/25/nist-declares-the-age-of-s... I'm not aware of two-factor authentication for SMTP or IMAP.