Yes, may be, it the gap is very huge which is some 10 times. From 12 May, I added 4 campaigns which were send to some 400 leads. In instantly it is hardly showing 3 to 4 clicks whereas in GA4, it is more than 500. I'm guessing 2 cases here, instantly might not be tracking well or have a backend issue. Another, GA4 can have some issue, though GA4 is used by another team. Is there any additional setup that needs to be done in GA4? Because I have only added the 2 utm source in email campaigns one is source which "cemail" means cold email and another is medium which is "email".