ENSURE THERES NO DUPLICATES PER DELIVERY
Hi,
I have created the following split where, from a database of 79k users, I want to impact those ones who are from GMAIL (47k). The first impact has to be for 1300 users and for the next communication I want to impact 2000, but how can I ensure that Im not gonna send the next email to the ones I have sent before?


Can someone help me with this?
Thank you very much and kind regards 🙂
