Campaign stats are based on unique events within the selected date range.
Let’s say a contact replies to your email 10 times over 10 days. If you're viewing stats for that date range, you’ll only see one unique reply counted, not all 10. This helps give you a cleaner view of performance without inflating numbers.
Stats are refreshed and cached every 10 minutes to ensure fast loading while still keeping data reasonably up to date.
