Number validity and delivery
Normalize country code and format without erasing the source value. Keep invalid, ambiguous, and unsupported records out of the approved send audience until resolved.
Putting the guide into practice
Use import validation and documented lookup results where available. Reconcile disconnected or wrong-recipient reports with suppression and provenance records.
- Original value
- Normalized number
- Validation result
- Suppression state
Limits and review decisions
Do not promise that list cleaning detects every bad destination. Delivery results and recipient feedback can reveal issues that preflight data missed.