How can I be added to the email distribution list when Couldflare updates their IP list?

Just as the title says. I’m using Tunnel with a firewall and need to update my rules anytime CF makes an IP change.

Cloudflare will email account administrators I believe. Or you can use the API and write your own notification tool. I recall that the last-modified timestamp on the files available through www.cloudflare.com/ips are not accurate, so best to generate a hash or similar to verify if the file has changed.