I have a godaddy domain with email. I give each company companyname@myfakedomain as the email. They all forward to me at astro@myrealdomain. If/when they aggressively send me aggravating email, I flip it to forward to some big wig at the company and forget about it.

Works well and is pretty cheap.

Thanks, though I am looking for something that I can manage myself. I won't say without a third party - using a VPS - but I am trying to build it such that I can pick up and move to a different VPS provider without a lot of pain.

Sure, I had a post about my setup on my blog around 1y ago : éé.net/ak5

Excellent, thank you.