Newman is a free Chrome add-on developed by imagentleman (José Antonio Chio). It falls under the category of Browsers and is specifically listed as an Add-ons & Tools subcategory.

This add-on provides users with simple notifications whenever a new Gmail message arrives. The purpose of Newman is to give users a notification if they have received an email on their Gmail account since the last time they checked their inbox, without constantly interrupting them or displaying the number of unread messages.

When there are no new messages, the extension icon appears as a blank page. However, if a new message arrives, the icon will change to a red paper plane. Clicking on the extension icon allows users to directly access their inbox. The icon will only display the paper plane if something new has arrived since the user's last visit to Gmail.

It's important to note that Newman does not show the unread count intentionally, as this is meant to be a feature of the add-on. Additionally, users must be logged into Gmail for the extension to work properly. If they are not logged in, the icon will appear greyed out with an "X".

Overall, Newman is a straightforward and handy Chrome add-on for users who want to receive simple notifications for their Gmail messages without being overwhelmed by unread message counts.