nmap http-grep NSE script not finding email addresses

Hello all,

According to the documentation: https://nmap.org/nsedoc/scripts/http-grep.html

and a book I'm reading on nmap I should be able to do:

nmap -p 443 --script http-grep insecure.org

sudo nmap -p 443 --script http-grep insecure.org Starting Nmap 7.80 ( https://nmap.org ) at 2022-01-28 23:37 EST Nmap scan report for insecure.org (45.33.49.119) Host is up (0.067s latency). Other addresses for insecure.org (not scanned): 2600:3c01:e000:3e6::6d4e:7061 rDNS record for 45.33.49.119: ack.nmap.org PORT STATE SERVICE 443/tcp open https Nmap done: 1 IP address (1 host up) …

cybersecurity email http nmap nse script