2FA methods supported by Proton Calendar
Adding two-factor authentication is one of the most effective ways to protect your Proton Calendar account. With TOTP support, you can generate Proton Calendar verification codes directly in the Authenticator App.
Authenticator app (TOTP)
Proton Calendar lets you use time-based one-time passwords, so you can generate verification codes in an authenticator app on your device — no network or SMS needed.
Proton Calendar 2FA — Frequently asked questions
Does Proton Calendar support an authenticator app?
Yes. Proton Calendar supports time-based one-time passwords (TOTP), so you can add it to the Authenticator App and generate verification codes right on your device.
Which two-factor authentication methods does Proton Calendar support?
Proton Calendar currently supports: Authenticator app (TOTP).
Is it free to generate Proton Calendar codes with the Authenticator App?
Yes. The Authenticator App is free to download, and generating Proton Calendar verification codes does not require an account or sign-up.
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