Problem setting up Gmail connection

When I edit the OAuth settings in Google once again, I am required to add my own domain as the allowed domain, in addition to wpmailsmtp.com

Now I get an Error 500 from Google when I want to allow the plugin to use the Gmail account. Weird.

Hi @superninchen ,

Thank you for reaching out to us and we’re sorry to hear that you’re having issues with setting up the Google Mailer.

That really is strange as I am completely unable to reproduce the issue on my end.

Just to confirm did you follow all the instructions outlined in this section of our documentation? If you did, then we’d recommend trying to perform the authorization step in an incognito/private browsing window in your browser of choice. That way you can ensure that the appropriate Google account is being used when attempting the authorization.

Also, in case you continue to run into issues, we’d recommend testing one of our other mailers.

In case it helps to know, SendLayer offers a free trial that allows you to send up to 200 emails (this is more than enough to perform a quick test). You can find more instructions for setting up the SendLayer mailer here.

I hope this helps, if you have any more questions, please feel free to let us know.

Thanks ??

I got the connection to work, finally. Trying a different mail account I took notice this time that in the step where you create a new project there was no organisation selectable to add the project to. That got me thinking. What was missing was the entire setup of a new administrative user, creating an organisation, verifiying the domain, and adding the mail account as administrator and project creator, before I could add the project as described in the above mentioned documentation.

Now the Gmail account seems to be connected successfully, as per the confirmation message from the plugin.

However, I cannot send e-mails with Ninja forms. I tested the contact form and see the following error message in the log of WP Mail SMTP.

The same error occurs when using the Test E-Mail feature of the plugin, by the way.

Mailer: Google / Gmail {
"error": {
"code": 400,
"message": "Mail service not enabled",
"errors": [{
"message": "Mail service not enabled",
"domain": "global",
"reason": "failedPrecondition"
}],
"status": "FAILED_PRECONDITION"
}
}

What’s the issue here, now? I am absolutely positive that the Gmail API is active, enabled and set to “External”.

• This reply was modified 2 years, 2 months ago by superninchen.

Found the reason for this now, too. I had created the credentials with the afore mentioned administrative user, which isn’t the same as the gmail account for which I want to use WP Mail SMTP.

After removing the OAuth connection and establishing it once again, this time logging in with the Gmail address as the google account (not the address of the administrative user), I got through the steps of confirming that the app can be trusted and is allowed to send mails.

Now it’s working, and I can even send mails to other Gmail addresses, which wasn’t possible before as Google discarded the mails before even putting them into the spam folder.

Case closed!