We parsed 71,216 real emails from four public corpora — the Git mailing list (2022–2026), Enron's internal mail (1999–2002), and two decades of spam and phishing — and counted how every one of them ends. "Best regards" turns up in 0. 71% of human emails: 1 in 141.
Source: [HackerNoon](https://hackernoon.com/nobody-actually-writes-best-regards?source=rss)