Gmail Sender Icons

Gmail Sender Icons is a Google Chrome extension that allows users to quickly identify the sender of email messages in Gmail without having to open the message. It displays the company domain name of the sender and the official logo (favicon) of the sender's organization alongside the email message. The extension has been featured on popular websites such as Product Hunt and LifeHacker, and all processing is done locally in the user's browser, with no Gmail data being shared or uploaded. The add-on is also open-source, with the code available on Github.