[kkfx]

Lightly and calmly, meaning I have many aliases on my addresses on personal domains and I try to always give unique aliases (keeping some spare on purpose), but not always-always because I'm not enough disciplined and the track is very informal, when (very rarely) I see spam I know it's time to rotate the alias. That's is.

Of course if [e-mail] write to my [e-mail] I could try to locate who have sold/leaked my address but it's still vague, since Amazon, eBay, PayPal, have a gazillion of third party. If it's to [e-mail] it's likely he was cracked and so on.