Hi @joelo246,
Thanks for reaching out! If your Gmail authorization suddenly stopped working, the most common cause is that the existing Google connection expired or needs to be reauthorized. Google can show an “This app isn’t verified” warning during the custom Google app setup flow, so seeing that screen by itself does not necessarily mean WP Mail SMTP is broken.
A few things to check:
- Go to WP Mail SMTP > Settings
- Remove the current Google/Gmail connection
- Reconnect the mailer and complete the Google authorization flow again
If you changed your Google password or enabled 2FA/MFA after the original setup, that can also require reconnecting the account.
Alternatively, you can also try creating a new Google app and reconnecting the Gmail mailer by following our guide here: https://wpmailsmtp.com/docs/how-to-set-up-the-gmail-mailer-in-wp-mail-smtp/
Sometimes recreating the Google app and going through the setup again resolves authorization issues like this.
Let us know how it goes. Thank you!