Google Signup/Login Duplicate Email

I am using the Google and Facebook signup flows. When a user signs up with facebook, but then clicks on google in another session (when the user is logged out) I want to display a message saying this user has already signed up with facebook and re-direct them to the facebook login.

The error message is not displayed as a core message in bubble and instead just logs to the console, so I can’t use the unhandled error workflow in bubble to do this. I have attached a screenshot.

Any ideas on how I can get around this?


When you do a social media login, it’s actually like adding an integration or an authentication method to the user
And it looks at the uniqueness based on the authentication method level

  • If a user has a Google account and tries to login with the same email to a -Facebook account it will create a new user

Another part is since this is like adding integration to the user, once the user is authenticated and logged-in, if he uses a workflow that triggers login with a new provider … the user then will be able to login using this method as well … even if it’s a different email

What you can do in this case is to validate if the email exists in your database or not before creating a new user

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This works! it does mean exposes the user email to everyone in the privacy settings though. Is there a way you can still maintain user email privacy and still achieve this?

Well, I’m glad you asked :grinning_face_with_smiling_eyes:
Do it as a backend workflow that ignores privacy rules just to check for this and return yes/no or static text instead of the email

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ahhh good idea thanks @basel.3adel