When you subscribe to a thread in xenforo, You can choose between getting alerts only (using the notifcation system) or getting emails as well.
Now with the emails turned out, you get an email each time there's an update in the thread. Now, vbulletin had the same email notification system. But on vbulletin the way it worked as that if person A posts a reply in a thread, you get an email update. Meanwhile, if you don't visit the forum, and person B/C/D post a reply in the thread, then you wouldn't get an email about that.
Basically you'd only get one update as long as you don't visit the forum. With xenforo, it seems you get an email every single time somebody posts a reply in a thread you signed up to. The result: Members email box get filled with emails.
Am I understanding this right and if so, is there any existing way to ensure that members get only one email to watched threads, so long as they haven't visited the site?