Fastmail Checker is a free Chrome add-on designed to enhance your email management experience by providing notifications for unread messages. This tool prominently displays unread email counts as a badge in the browser toolbar, ensuring you stay updated on your Fastmail account without needing to constantly check your inbox. Additionally, it offers sound notifications, which can alert you whenever a new email arrives, making it easier to manage your communications efficiently.

In addition to its core functionality, Fastmail Checker supports a Do Not Disturb (DND) mode, allowing users to silence notifications during specific periods. This feature is particularly useful for those who want to minimize distractions while working. Overall, Fastmail Checker serves as a practical tool for anyone looking to streamline their email notifications and maintain a clutter-free browsing experience.