How on earth is that anonymous? All of your emails are on the same domain, and nobody else is using that domain. As soon as I see an email @jamesboehmersdomain, I know that it belongs to jamesboehmer.
You're right, it's not 100% anonymous. But my name's not in the domain, and I use WhoisGuard with my registrar. It's reasonably effective, cheap, and a low effort way to deflect the bots and identify suspicious activity.
7786655's point was that the custom domain is not perfect anonymity because if someone knows who owns the domain, then they know the owner of every email. If someone discovers my pseudonymous gmail account, then the same problem exists. But perfect anonymity was never my goal.
I wouldn't tie my entire digital identity to whatever's cheapest if I could avoid it.
In my case I use my CC TLD. I'm in a generally stable nation that follows the rule of law and the administrator of the CC TLD has all sorts of processes in place that I have access to as far as regaining control of the domain if it's inappropriately transferred, making appeals, etc.
The extra $10 or so a year this costs is very much worth it to me as basically a form of insurance.
like Hamuko said, there are domains like .party, etc that are cheap. However, some sites won't take them. My main junk account is a wildcard .party domain. It'll work with mosts sites, but the odd one won't take them. I ended up registering a .com that goes to the same inbox to get around these.
Another issue is that unless one also gets a new IP address for the mail server, it might be possible to associate the real domain with this "anonymous" one.
