Is it possible to disable email notification of Advanced Threat Protection(ATP)

Are you using Sophos Central Management? 

Then your could disable the Alert in Central and rely on the Central Infrastructure. 

In XG it is only possible to disable all Alerts.

As far as i know, in the next Release, there will be a option to disable certain Alerts (V18). 

yes i have central management  but where to disable it??? Where is option  which will disable these alerts

Take a look into this KBA: 

https://community.sophos.com/kb/en-us/132192

Or the FAQ.

https://community.sophos.com/kb/en-us/132195

I tried but am still getting the mail alert "Message: Drop by Advanced threat protection (ATP)."

From where I can block these mail alerts?

I tried but am still getting the mail alert "Message: Drop by Advanced threat protection (ATP)."

From where I can block these mail alerts?