How to Improve International SMS Delivery Rate: 5 Practical Tips

Why Is the Delivery Rate So Important?

Delivery rate directly affects user experience and business conversion. An undelivered verification code may mean a lost user.

Five Practical Tips

1. Choose Direct Carrier Channels

• Prioritize providers with direct connections to carriers in target countries
• Reduce intermediate hops to lower latency and failure risk

2. Configure Sender ID Properly



• Register your branded Sender ID in advance
• Avoid using random numeric numbers (more likely to be blocked)

3. Optimize SMS Content



• Avoid sensitive keywords (such as "free", "lottery", etc.)
• Keep content concise and clear, include brand identity
• Provide a clear opt-out method

4. Implement Smart Routing



• Automatically select the optimal channel based on the target number's carrier
• Retry automatically on failure and switch to backup channels

5. Monitor and Optimize



• Monitor delivery rates and failure reasons in real time
• Analyze data regularly and continuously optimize sending strategies

> Contact us for a customized delivery rate optimization plan.