Statcounter removed, but still receiving mails with weekly reports


I made a new website in WordPress, the old one was a plain HTML site with Statcounter active. On the new website in WP we did not implement Statcounter. Before installing the new WP website on the server I deleted all old files, including the ones from Statcounter. I still receive e-mails though with weekly reports. Any idea how this is possible? I cannot find any file on the server.

I allready asked my hosting company, they do not cache pages and they have no idea either.

Hope you can help me out finding the source of the e-mails.

The website url is: