Error 400: redirect_uri_mismatch

Hi @lookwhoo,

Thanks for reaching out. Please check the redirect URL you’ve configured which should be “https://connect.wpmailsmtp.com/google/”. You can follow our documentation on the Gmail mailer. There was a change in the redirect URL since 2.5.0, however, the old redirect URLs should have worked fine unless the Google account was disconnected for some reason.

I hope this helps!

Hi @sanzeeb3

Thanks for your reply. That’s actually the correct URL I have in the Authorized redirect URI field and when trying to reconnect, I get this message, with attention to the last part…

Authorization Error
Error 400: redirect_uri_mismatch

You can’t sign in to this app because it doesn’t comply with Google’s OAuth 2.0 policy.

If you’re the app developer, register the redirect URI in the Google Cloud Console.

Learn more

The content in this section has been provided by the app developer. This content has not been reviewed or verified by Google.

If you’re the app developer, make sure that these request details comply with Google policies.

redirect_uri: https://connect.wpmailsmtp.com/google/

Nothing has changed on the Gmail’s local account end to my knowledge. Not sure what to do.

@lookwhoo and @sanzeeb3 – also having this exact same issue.

Hi @bpence, @lookwhoo,

Thanks for the details! You might try by re-doing all the steps from our Gmail mailer documentation.

If you still face the issue, change the publishing status to “Testing”. The Apps in production may require verification in some cases.

I hope this helps!

Hi @bpence, @lookwhoo, – We haven’t heard from you in about a week, so I’m going to go ahead and mark this ticket resolved. If you still have questions, though, please feel welcome to continue the conversation.