Defining delivery rate
Submitted, accepted, sent, delivered, failed, and unresolved records are different sets. A report can change if late receipts arrive after its cutoff.
Putting the guide into practice
For a report with 9,000 reported deliveries out of 10,000 eligible submitted messages, the stated rate is 90 percent. Keep unresolved messages visible rather than quietly excluding them.
- Delivered definition
- Denominator
- Cutoff time
- Unknown count
Limits and review decisions
A higher reported delivery rate is not an observed open-rate lift. Compare programs only when their status coverage and denominator definitions match.