Hi,
MONyog, by design, sends one email/trap per data collection if there is/are any alert-able or stable counter(s). So, for alerts you are getting different emails that indicates that those alerts occur at different data collections done by MONyog whereas for stable notification, those counters were found in stable state for that particular data collection so MONyog sent you the email regarding that.
Can you describe why do you want separate notifications for each monitor every time?
Also, it would be better if you write this to [email protected] where we can interact in a better manner.
Hope this helps.