Delete old post

Hi, I made a post in my very old account (qlehosting) which contains my private email and I would like to remove it.

However, I don’t have access to the email that it was registered with (as its on the old domain site).

I created this post when I was a teenager and didn’t know any better. Is there any way I can get the post (or at least the email) removed without being able to log into the account?