How to redirect subdomain (cname cannot be proxied)

Hi, we are using dedicated sending domain in Klaviyo account, ie:
something.example.com

This subdomain is added as CNAME vith value xxxx.xxxx.sendgrid.net. Sendgrid cannot be proxied (orange cloud), so I cannot use page rule to redirect subdomain to main domain.

Do you have ideas how to redirect subdomain to main domain?
something.example.com to example.com

If the subdomain is an unproxied CNAME pointing at Sendgrid, Sendgrid has full control over it. The only way you could redirect from it is if Sendgrid allows you to do so, none of Cloudflare’s redirect rules can work on an unproxied domain.
It’s the same as if you had a CNAME with a plain DNS Host and a normal web server, only the web server can return a 301/redirect.

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