Hush

Hush groups bulk Gmail messages by sender and lets users choose whether to unsubscribe, create a blocking filter, or archive or trash older newsletters. It focuses on messages with an unsubscribe header and provides review controls before actions are taken.

The app is free and open source under the MIT license, with builds for Windows, macOS, and Linux. It has no subscription or Hush-hosted account service. Gmail access requires Google credentials created by the user and the permissions needed for the selected actions.

Unsubscribing is a request to the sender and may not stop future mail. Filters affect mail at the account level, so users should review the selected senders carefully. The project publishes release files and checksums; current desktop builds are unsigned, which may cause operating-system prompts.