Passkey Directory
Fastmail
Directory entry lists MFA as allowed (no explicit passwordless/passkey mention in provided data).
MFA supportCommunication
Domains
fastmail.com
Also: fastmail.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
Setup requires SMS verification.
Documentation
Sources