Inbox Shield — Privacy, in plain words

The details

Inbox Shield does not collect, store off your device, transmit, sell, or share any personal information or browsing data. All checking happens locally in your browser. Settings you choose (such as a family code word and trusted senders) and a log of warnings are stored only in your browser's local storage on your own device, and you can clear them at any time. The extension contains no analytics, no advertising, and no third-party code.