Two-factor authentication

For more security

  • Set up extra protection

  • Use app authentication
  • Log in with a one-time code
Two authentication factors shown as symbols next to mail icon

What is two-factor authentication?

Discover the benefits of 2FA

Would you like to give your GMX mailbox an additional layer of protection? With the help of two-factor authentication, also known as 2FA, it’s no problem! After 2FA is enabled, you will be prompted not only for your password but also for a 6-digit one-time password (OTP), which you generate on your smartphone using an authentication app.

The advantages of this two-step verification:

Computer, smartphone and 2FA symbols grouped together
  • Better protected: With two-factor authentication, you make the login process more secure by automatically providing more protection against unauthorized access.
  • Second factor: Thanks to your personal security code, you always retain full control over your mailbox – even if your password should actually be stolen.
  • Secure everywhere: You can use 2FA to log in to your GMX inbox on your computer and in the GMX Mail App as well as external email programs linked to your account.

Double protection

How 2FA works

Password symbol with computer icon

In your GMX mailbox on the Web

Each time you log in to your mailbox in the browser, you need both your password and a 6-digit security code, which is created by an authentication app on your smartphone.

Password symbol with smartphone icon

In your GMX Mail App

To log in to the app, you first need your password again. Then you enter a 6-digit security code once, which is also generated via the authentication app.

“IMAP / POP3” written at top of image above icons representing computer, smartphone and password

In third-party email programs

Do you retrieve your emails using an external email program (e.g. Outlook or Thunderbird) via POP3/ IMAP? Then you enter an application-specific password once in your email program.

Would you like to make your GMX mailbox even more secure? Then use two-factor authentication!

Additional factor = additional app

What you need to know about the authentication app

Two-factor authentication symbol alongside icon of smartphone showing mail symbol

For the two-step verification process, you need an authentication app (also known as an authenticator or OTP app) on your smartphone. This app generates a six-digit security code that you must enter when setting up two-factor authentication. A new code is created every 30 seconds and must be input during this window of time, after which it is no longer valid. You also need the app each time you log in to your email account on your computer, and once to log in to the GMX Mail App.

What does this mean for you? To use two-factor authentication, you must install a free authenticator on your smartphone. This app will then also work without a cellular network. If you are unsure which app to use, please see our GMX Help Center, where we have put together a list of suitable apps for you.

To GMX Help


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