Understand review timelines, submission statuses, and how to resolve rejections.
Review period
Each SMS message includes an SMS signature and a message template. Both must be approved before you can send messages.
Review runs between 9:00 and 23:00 (UTC+8) every day, excluding weekends and public holidays. Most submissions are reviewed within two hours. Submit before 18:00 on a business day for optimal efficiency.
Submission statuses
Pending Approval: Your signature or template has been submitted and is under review. Reviews are expected to complete within 2 hours.
Approved: Your signature or template is ready to use. You can now send messages.
Failed: Your signature or template was not approved. Log on to the SMS console. In the Actions column of the target signature or template, click View Reason and Modify to view the reason why the review failed. Modify the content and resubmit it for review.