I just signed up using my personal gmail address and was offered this option to verify domain ownership: http://puu.sh/mB373/62a963d896.png http://puu.sh/mB373/

I just signed up using my personal gmail address and was offered this option to verify domain ownership: http://puu.sh/mB373/62a963d896.png http://puu.sh/mB373/62a963d896.png The file contains a random token. This is essentially the same solution Let's Encrypt offers (among others).