SMS Campaigns Updated Mar 2026
Understanding Delivery Reports (DLR)
How to read delivery reports and what each status means.
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Real-Time Delivery Tracking
Every SMS sent through Sakura SMS is tracked with real-time Delivery Reports (DLR). Here's how to interpret them.
Status Definitions
- SENT — Message dispatched to the carrier network
- DELIVERED — Confirmed received by the recipient's phone
- FAILED — Message could not be delivered (invalid number, network error, blocked)
- PENDING — Waiting for carrier confirmation (may take up to 48 hours)
- EXPIRED — Carrier could not deliver within the retry window (usually 24-48 hours)
Viewing Reports
Navigate to History in the sidebar. Click any campaign to see the detailed breakdown per recipient.
Common Failure Reasons
- Invalid Number — Number does not exist on any network
- Phone Off — Recipient's phone is powered off or out of range
- Blocked — Recipient has blocked SMS from your sender ID
- Network Congestion — Carrier queue full, retry later
- Spam Filter — Message flagged by carrier anti-spam systems
Tip: If your delivery rate drops below 90%, check your contact list quality. Use the Audience Cleaning feature to remove invalid numbers and save credits.
Related in SMS Campaigns
Creating Your First SMS Campaign
Step-by-step guide to composing and sending your first bulk SMS campaign.
Personalizing Messages with Variables
Use dynamic variables to make each message unique and boost engagement.
Scheduling Campaigns
Schedule messages for optimal delivery times and manage recurring campaigns.
Optimizing Delivery for Vodacom & Tigo
Strategies to ensure 99.9% delivery rates on Tanzania's largest networks.