

My email provider allows for unlimited aliases. So, while I have 600+ email addresses, emails to them all end up in the same mailbox.
I do this too. The unique email address I create for each is identifiable to the place I’m using it. This has other benefits. If an organization you created and account with sells or has a data breech you know exactly which company it was when you start receiving spam or phishing email directed to that address. This is also nice because you can “black hole” that email address and all the spam goes with it even future spam not sent yet.
That HTTP request would also show up in the advertisers web logs with your origin IP address.