Smooth Checkbox for Gmail™ is a free Chrome extension developed by js extensions. It falls under the category of Browsers and is classified as an Add-ons & Tools subcategory.

This handy extension allows users to select and deselect multiple checkboxes in Gmail with ease. Gone are the days of clicking each checkbox individually; now, users can simply click and drag to select multiple checkboxes at once.

When it comes to deselecting checkboxes, Smooth Checkbox for Gmail™ offers a convenient behavior. If the user drags their cursor while deselecting, every checkbox touched by the cursor will be deselected.

It is important to note that this extension does not collect or store any personal or sensitive user data. It simply enhances the user interface functionality of Gmail by adding the ability to select and deselect checkboxes effortlessly.

Please note that Gmail is a trademark of Google Inc., and the use of this trademark is subject to Google Permissions.