Passkey Directory
Protonmail
Protonmail supports security keys as a form of MFA; security keys require TOTP to be enabled.
MFA supportCommunication
Domains
protonmail.com
Also: protonmail.com
Last verified
Dec 10, 2025
Date when passkey support was last confirmed
Sign-in mode
MFA Only
Passkeys used as a second factor alongside password
Platforms
web
Notes
TOTP must be enabled to use a security key.
Documentation
Sources