Hi @mm185429  were you able to find the solution,  I too facing the issue the same but mine is a Splunk report we have custom alert action for mailing purpose and made it pull mail contacts from a lookup and lookup contained two DLs.  I re-run the report with my email it received once only for now I have cloned the report and ask user to check if they are receiving again since the actual report should once a day.   I checked in the intenal logs can see two mail were sent out at same time but there is only one report which is scheduled to run once a day. ... View more