Two-factor authentication (2FA) adds a second step when you sign in to the webmail: after your password, you enter a 6-digit code from an app on your phone. Even if someone learns your password, they can't sign in without your phone.
You need an authenticator app on your phone, such as Google Authenticator, Microsoft Authenticator, 2FAS or Aegis.
- Sign in at mail.liberation.email with your full email address and email password.
- Click the gear icon next to your name in the top left to open Preferences.
- With General selected, scroll down and tick Enable two-factor authentication using a TOTP application.
- A QR code appears. Scan it with your authenticator app.
- Type the 6-digit code from the app into Enter TOTP verification code.
- Click the save icon at the top right.

(1) General (2) Turn on two-factor authentication (3) Save
2FA applies to the webmail sign-in. Mail apps on your phone and computer keep using your email password.