“Token has been expired or revoked.” error

Hello @aknahin113,

Thank you for reaching out regarding the “Token has been expired or revoked” error message you’re encountering with FluentSMTP.

Based on the information you’ve provided, it’s possible that the Google Account used to configure the SMTP connection may have undergone changes for example, Security Policy or Credential Changes.

I recommend the following steps:

1. Recreate the SMTP Connection: Delete the existing connection and create a new one. This will ensure that the latest authentication details are used.
2. Re-connect from the SMTP Connection: If deleting and recreating the connection is not possible, try reconnecting from the SMTP connection settings page. This may prompt you to re-authenticate with your Google Account.

Please try these steps and let me know if the issue persists. I’ll be happy to assist further and provide additional troubleshooting tips if needed.