Hi @garimavarshney9 ,
You can add the filter in Options section of Outlook activity properties as shown in below screenshot,
"[ReceivedTime] >= '" + DateTime.Today.ToString("dd") + " 00:00AM'"
Hope this may help you 
Yoichi
Raja.G
mkt.scott4Hi @garimavarshney9 ,
You can add the filter in Options section of Outlook activity properties as shown in below screenshot,
"[ReceivedTime] >= '" + DateTime.Today.ToString("dd") + " 00:00AM'"
Hope this may help you