Hi Rolf - I took a look at our page server stats and we can track all 4 (now 5) unique visitors to that page. If you’re driving traffic from an email, there isn’t anything that prevents people from coming across the pages from other sources (ex. if someone shares the link with a colleague, etc.).
While it’s not as likely that your getting organic search traffic for pages that have launched only a day or two ago, I’d recommend checking the “hide my page from search engines” checkbox in your Page Properties as well, which will prevent it from being crawled by Google, et al.
We can always confirm whether the hit counts you’re getting are legit (and usually determine whether it’s humans or bot traffic–though we filter almost all of the latter), but if you do install Google Analytics on your page, you’ll be able to see things like referral traffic as well, which will help you determine where else your traffic is coming from (and you’ll also be able to confirm additional hits yourself).