I’m pretty sure redirects.json supported redirecting to external domains in the past. Anyway, being able to redirect a page to another domain (with path) would be a great feature. In my case, I have “promoted” some blog posts to official help documents on my documentation site (another subdomain). In this case, I simply want the blog posts to redirect to the documentation site. Since redirects.json only supports relative links and when I cannot access a .htaccess file or similar, there is no way for me to redirect the requests.