Email notification are not accurate

Email notification are not accurate

Dear Support
we notice the email notification for device alram that we alreday set are not sending to user as expected.
example 1:
I got email attention notification  when my device down but when the device back to normal no clear email notification has been sent.
The issue not always happen sometime i got both notification the attention and clear. 

Example 2:
Sometime i got clear eamil notification but the aatention notification i did not get.

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