Create smart campaign 1
Smart list: "not visited web page is any in past 30 days"
Flow: Add to list "Not visited website past 30 days"
Schedule: run the batch once daily
Create smart campaign 2
Smart list: Trigger > visits web page any, filter > member of list is "Not visited website past 30 days"
Flow: send alert to BDR, remove from list "Not visited website past 30 days"
Schedule: activate, each lead can run through every time