LinkedIn Message Manager is a Chrome add-on developed by Daniel Krajka. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This free tool aims to enhance your LinkedIn messaging experience by adding a "select all" checkbox to your messages.

With LinkedIn Message Manager, you can now easily select all your LinkedIn messages at once, saving you time and effort. This feature comes in handy when you need to perform bulk actions such as deleting multiple messages or marking them as read. The add-on seamlessly integrates into your LinkedIn interface, making it a convenient tool for managing your messages efficiently.

The simplicity and effectiveness of LinkedIn Message Manager make it a must-have for LinkedIn users who frequently deal with a large volume of messages. By streamlining the process of selecting multiple messages, this add-on enhances productivity and improves the overall messaging experience on LinkedIn.