Prepare input
Keep the source identifier, use one record per row and verify the format with a small sample before a larger task.
Zalo Screening for Account presence & Activity signal
Use NumSift to clean Vietnamese customer phone lists before Zalo service, research or audience operations. Normalize Vietnamese records carefully around the +84 country code and local leading zero before comparing Zalo account results.
✓Account presence✓Activity signal✓Profile availability
ZaloData ScreeningAccurate data. Global reach.
Account presence
Activity signal
Profile availability
Reachability classification
PRODUCT SCOPE
What Zalo screening is designed to do
Zalo number screening for clean Vietnamese customer phone lists before Zalo service, research or audience operations.
Choose signals
This page focuses on Account presence, Activity signal, Profile availability, Reachability classification, rather than applying unrelated fields from another product.
Keep context
Export task time, unknown values and exception states so the result remains reviewable.
SUPPORTED CAPABILITIES
Screening capabilities covered for Zalo
Fields can vary by task. Select only the capabilities the workflow needs and validate a small batch before submitting a full dataset.
Zalo Account presence
Classify available account-presence signals, unresolved records and task exceptions without treating them as phone validity.
Result groupaccount status, unresolved state and task status
Zalo Activity signal
Keep the task timestamp beside any available activity signal so teams can judge how current the result is.
Result groupactivity band, observation time and unknown value
Zalo Profile availability
Organize returned profile fields while preserving empty and unknown values for later review.
Result groupavailable profile fields and empty-field state
Zalo Reachability classification
Keep reachable, unreachable, unknown and exception states separate instead of forcing a binary result.
Result groupreachability state, check time and exception code
RESULT GROUPS
What the output should make clear
Every result group should remain linked to its source record. Unknown, empty and task-exception values should stay separate instead of being converted into a negative result.
Zalo Account presence
account status, unresolved state and task status
Zalo Activity signal
activity band, observation time and unknown value
Zalo Profile availability
available profile fields and empty-field state
Zalo Reachability classification
reachability state, check time and exception code
THREE-STEP WORKFLOW
From source data to reviewed Zalo results
Prepare and sample
Preserve source values, normalize obvious format differences, remove exact duplicates and prepare a small sample.
Select the required capabilities
Choose the required items from Account presence, Activity signal, Profile availability, Reachability classification; avoid adding fields the decision will not use.
Review and export
Check field meaning, task time, unknown values and exceptions before importing structured output into another system.
PRACTICAL USE
Where Zalo screening fits
Vietnam customer operations
Create a dedicated Zalo dataset for Vietnam customer operations, with source identifiers and task timestamps kept beside every result.
Decide how to separate current Zalo signals from unresolved phone records
Use account presence, activity signal, profile availability, reachability classification as separate review fields so one missing value does not erase the rest of the record.
Prepare Zalo exports for downstream review
Export the original identifier, selected result fields, unknown values and exception states together so another team can reproduce the decision.
FAQ
Zalo screening questions
What does the Zalo number screening page cover?+
It explains how to clean Vietnamese customer phone lists before Zalo service, research or audience operations, including the supported signal groups, input preparation, result interpretation and review boundaries.
What input should I prepare for Zalo screening?+
Prepare authorized phone or account records. Keep one source record per row, preserve the original value and normalize obvious formatting differences before a larger task.
Which Zalo results can be organized?+
This product page covers account presence, activity signal, profile availability, reachability classification. The exact fields available depend on the selected task and may include unknown or empty values.
How should I use Zalo screening results?+
Use them to separate current Zalo signals from unresolved phone records. Check task time, field meaning and exception states before importing results into another system.
Does Zalo screening prove consent or identity?+
No. Screening organizes returned technical or account signals. It does not prove a person's identity, create marketing consent or replace the rules that apply to the source data.