Cloudflare Access for an external website

Is it possible to add an external website (ex: hosted on Netlify) to Cloudflare Access (Zero Trust) that would have the same kind of restriction for accessing the site (ex: with a pin delivered via e-mail) as would a self-hosted site by Cloudflare Pages

If so, what would be good references to start with? Wondering if adding a SaaS application to Access would be it

My current setup is:

  • staging/development site hosted on Netlify (really liking the Netlify drawer for clients to use)
  • production site is hosted on Cloudflare Pages