Oh thats what I was asking, how you know that this installation doesn't create any cookies or anything. Thanks
It definitely doesn't create any cookies, though they could theoretically log your identity based on your cookies you downloaded it from, which I don't think they do.
Edit: I just looked again and you don't even have to be logged in to download insite, so there's no way they're checking downloads.
The link in the targeted email isn't unique.