Launch Authy on your phone while you leave this page open. This can only be done through the web version of ProtonMail found at . When ready, select Enable Two-Factor Authentication Enable 2FA Visit the Security tab within the Settings of your account. Although they work in similar ways, Authy is more feature-rich and allows for multi-device syncing, cloud-backups, and easier account recovery should you change or lose your phone or device. Read more information on the features of Authy here. Important: If any sites prompt you to use Google Authenticator for two-factor authentication, note that you can always substitute the Authy 2FA app instead. Install Authy on your device by searching for it in your device’s app store.

It enables you to have a single mobile app for all your 2FA accounts and you can sync them across multiple devices, even accessing them on the desktop. The best way to manage all your 2FA accounts is to use the Authy app. How to enable 2FA for ProtonMail Install Authy

Add a second proton email account