https://digdeeper.club/articles/email.xhtml

Anonymized data: https://news.ycombinator.com/item?id=38232378
https://www.eff.org/issues/privacy
https://youtu.be/RWpG0ag6j9c?t=274
https://systems.cs.columbia.edu/private-systems-class/papers/Narayanan2008Robust.pdf
https://scholar.google.com/citations?view_op=view_citation&hl=en&user=rejZUEkAAAAJ&citation_for_view=rejZUEkAAAAJ:u-x6o8ySG0sC
