# Open-source email security tools

3 open-source email security tools rated against public privacy criteria.

1. [DKIM Verifier](https://privacyratings.com/email-security-tools/dkim-verifier/): B (80/100). Thunderbird add-on that verifies DKIM signatures and shows the result in the message header, to help spot spoofed email.
2. [Email Privacy Tester](https://privacyratings.com/email-security-tools/email-privacy-tester/): B (80/100). Tests whether your mail client "reads" emails before you open them, and what analytics, read-receipts or other tracking data it leaks back to the sender.
3. [Paperweight](https://privacyratings.com/email-security-tools/paperweight/): B (80/100). Local-first desktop app that scans an inbox to list the services holding your data, then helps unsubscribe and send data deletion requests.

Source: https://privacyratings.com/open-source/email-security-tools/