Memory Utilization Emails

Hello,

how can I reduce how frequently these emails go out? I get hundreds a day.

[Fatal] Memory utilization on virtual machine [machinename] has reached 96 % of the memory ESX has granted to it.  The following URL can be used to obtain alarm details. 

I've adjusted the behavior to "Fire action if 2 consecutive evaluations are true" and "wait at least 30 minutes after first evaluation".