Mis-share stopper is a free Chrome extension developed by VALUES, Inc. that aims to help users avoid sharing documents with wrong people and inviting wrong guests in Google Workspace. This add-on is especially useful for those who frequently use Google Drive, Google Spreadsheets, Google Slides, and Google Calendar.

With Mis-share stopper, you can easily identify unauthorized users by the color-coding system. The extension paints red the users whose email address doesn't include your registered email domain. This simple visual cue allows you to quickly identify potential sharing mistakes and prevent sensitive information from being shared with the wrong recipients.

To get started, simply click the icon on your browser toolbar to register your email domain. The extension also allows you to register multiple email domains, giving you the flexibility to manage different domains within your organization.

One important note is that if you want to use the extension function for the tabs opened before installing the extension, you will need to reload the tabs with the F5 key.

Mis-share stopper is a valuable tool for anyone who wants to ensure the security and privacy of their shared documents and invitations in Google Workspace. It provides a simple yet effective way to prevent sharing mistakes and avoid potential data breaches.