I made everything as it should be done in Googles side, but it shows this message from their side:
Verification Status
Pending developer action
Complete all actions below. Update your email thread with our Trust and Safety team after you have completed an action. The Trust and Safety team will continue the verification process once all actions are completed. Learn more
Action Required
Comply with domain verification requirements
Ensure your application’s domains have completed the Search Console verification process
LEARN MORE
Update brand information
Ensure that your app’s name, logo, and OAuth clients meet all requirements
Google gave me this answer back:
Hi,
Thanks for your patience while we reviewed your project.
Since your app is a Gmail SMTP plug-in for WordPress, and you or the site admin are the only users of the app, we recommend that you keep using your app with the “unverified app” screen. The Gmail API isn’t for public use in this case, so you do not need to get verified.
If you are having issues activating the plugin, you can see all your support options in General Support.
Please note that Google also participates in community discussion groups and mailing lists that can help you find answers or troubleshoot problems.
We strongly recommend that you submit a question via any of the below third-party community discussion groups and/or mailing lists:
- Stack Overflow – A question and answer site for programmers.
- Server Fault – A question and answer site for deploying and managing IT platforms.
- Google Developers – Issue tracking for features and bugs. Search existing issues before creating a new one.
- Google Groups – A place for non-technical how-to questions.