Rythm

Meet Rythm

Rythm adds a sender-access layer to Gmail and Outlook. It builds a guest list from a user's contacts and communication activity, allowing familiar senders through while moving messages from unknown people into a separate folder. Users can review that folder and rescue a message, which adds its sender to the trusted list.

An optional cover charge gives an unfamiliar sender another route to the inbox. The recipient sets the amount, and qualifying paid messages are marked accordingly, with payment directed to the recipient's wallet. Rythm works with an existing email address rather than requiring a migration, and it keeps filtered messages available for review instead of deleting them.