Version updated for https://github.com/msgwing/ZeroSMTP to version v1.7.0. This action is used across all versions by 0 repositories. Action Type This is a Composite action. Go to the GitHub Marketplace to find the latest changes. Action Summary This GitHub Action automates the process of auditing and managing Microsoft 365 SMTP AUTH shutdown. It helps identify exposed mailboxes, checks compatibility of devices with OAuth firmware, provides a free relay for backward compatibility, offers code examples and deployment recipes across multiple languages, and includes documentation on error messages and migration strategies.