I think the hardest part of outbounding is getting your message delivered to the right person within the company. Often times, your email will be blocked by spam filter or the administrator of the support email will just trash your email thinking...
Just noticed that they are not even indexed by Google search. Could be banned. I never sold any domains there, but I did receive an offer there once, which I turned down. Nothing against them, but I wouldn't spend any time there. There are other...