SENT (Local Proof-of-Send) is a free Chrome add-on designed to enhance the security of your online communications. It generates a local cryptographic proof token at the moment you press 'Send', ensuring that your content remains private and secure. This tool operates without any access to the content being sent, allowing users to maintain complete control over their data while still providing a reliable proof of transmission.

The add-on is categorized under Browsers, specifically in the Add-ons & Tools subcategory. With its fail-open design, SENT ensures that users can still send their messages without interruptions, even if there are issues with the proof generation process. This makes it a practical choice for those seeking to bolster their privacy without compromising on usability.