Passband is an email productivity brand designed to help people focus on messages that need their attention. Built for Gmail on Mac and iPhone, it works with the inbox users already have rather than requiring a separate email account. Passband reads incoming messages, identifies the few that may require action, and brings them forward so users can see priorities such as a request for a decision, a time-sensitive notice, or a payment due.

The remaining email is filed out of the way but remains available to find whenever needed. This approach aims to make an overloaded inbox easier to manage without promising the unrealistic goal of reaching inbox zero every day. Passband presents its service as a way to protect users’ attention and distinguish meaningful communication from promotions, digests, routine notifications, and other lower-priority messages.

The product is offered for Gmail users on Apple devices, and interested users can join its waitlist. The site also references self-hosting and GitHub, though it provides limited detail about those offerings