Protegy · How to enable 2FA on

How to enable 2FA on Fastmail

Download Protegy, connect the service in the Authenticator tab, verify a fresh code, and save the recovery options before you sign out.

✓Last reviewed: 2026-07-31
Current settings pathFastmail → Settings → Account or security → Two-factor authentication → Authenticator app

Service details

Official domain
fastmail.com ↗
Category
Email
Supported verification methods
SMS · Authenticator code (TOTP) · Dedicated hardware · Security key / U2F

Before you start

Install Protegy, sign in to the service on a trusted device, and keep the page open while you add the account.

Setup steps

  1. 01

    Open the security settings using the path shown above.

  2. 02

    Fastmail → Settings → Account or security → Two-factor authentication → Authenticator app

  3. 03

    In Protegy, tap add, scan the QR code, then return to the service and enter the current six-digit code.

  4. 04

    Save the service's recovery codes somewhere separate from the phone that holds your authenticator.

Recovery and troubleshooting

If a code is rejected, check that your device time is set automatically and try the next code. If you lose the phone, use a recovery code, a trusted session, or the service's official account-recovery flow.

Related terms

FAQ · Fastmail

Before you start: Fastmail

Install Protegy, sign in to the service on a trusted device, and keep the page open while you add the account.

Setup steps: Fastmail

Fastmail → Settings → Account or security → Two-factor authentication → Authenticator app

Supported verification methods: Fastmail

SMS · Authenticator code (TOTP) · Dedicated hardware · Security key / U2F

Recovery and troubleshooting: Fastmail

If a code is rejected, check that your device time is set automatically and try the next code. If you lose the phone, use a recovery code, a trusted session, or the service's official account-recovery flow.

Official documentation

https://www.fastmail.com/help/account/2fa.html ↗

Interface labels can change. The official documentation is the source of truth. Protegy is not affiliated with the service named on this page.

Service capability data sourced from 2FA Directory by 2factorauth. 2fa.directory ↗

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