Hey Eric, Sorry for the delay here! Here are some of the issues I spotted: - The campaign ID field in the CEO Campaign column is showing as empty and this may be the reason those rows are impacted. Can you please try adding this and running 1 or 2 cells? - Stale data in some cells. It looks like some emails were manually added to some cells in the validate email column. I'd recommend these be added in a separate new column, and we can merge that with the "validated emails column" in a column that'll serve as "Master email".