Copy Button for Gmail is a Chrome extension developed by Talangio, available for free in the Browsers category under Add-ons & Tools. This simple yet handy tool adds a convenient button in Gmail that allows users to easily copy the email address of the sender with a single click.

The main feature of this extension is its ability to streamline the process of copying the sender's email address in Gmail. By installing the extension, users can save time and effort by avoiding manual copying and pasting, especially when needing to add the sender to a CRM or search for the sender within their inbox.