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2FA also works if you use your own domain with

For your security, supports several variants of two-factor authentication:


We do not offer SMS based 2FA and this ist is not planned for the future.


In Office you can select the desired authentication method under "Settings -> -> One Time Passwords -> OTP Method":
Specify the four-digit PIN and the desired security level. The PIN may contain letters ( a-z lowercase or uppercase) and numbers, but no special characters. Then select the desired method to generate one-time passwords: via or with one of the other methods.

We offer two different levels of two-factor authentication: