[sessy]

Like i mentioned in an earlier comment, we have a nifty little program that checks both the validity of the business email as well as the domain. Then a sampling of the list is done to weed out troublemakers. We do a little bit more. Unfortunately i can't get into specifics here :)

[mockingbirdy]

Ok, nice to hear that. It seems that you've put some thoughts in it. Mail is very easy to mess up, so I wish you all good luck!