PrivacyMail.info used to be an email privacy measurement tool, developed and operated by Max Maass, Stephan Schwär, Jan Klinkmann, Jonathan Schad, Chi Viet Vu, and Matthias Hollick at the Secure Mobile Networking Lab at TU Darmstadt. Due to technical issues with the platform, combined with a lack of time to maintain it, it has been discontinued.
Over its lifetime, the platform collected over 500.000 commercial emails. If you are interested in getting access to this dataset, please see this Zenodo Dataset.
The source code is still available on GitHub, and the platform is described in this scientific paper.
Thank you for having used PrivacyMail!