Delivery rate is the most important metric in A2P messaging. Yet many companies leave potential on the table through avoidable mistakes in sender ID, routing, and content.
In this post we share the most important best practices from our experience with 200+ carrier connections worldwide.
1. Sender ID Registration
Correct registration of your sender ID is mandatory in many countries and has a direct influence on the delivery rate. We recommend registering alphanumeric sender IDs with destination networks early.
2. Content Optimization
Avoid spam trigger words, use URLs only on trusted domains, and personalize messages where possible. Carriers are increasingly filtering generic marketing content.
3. Routing Quality
Direct carrier connections (Tier-1) deliver consistently better delivery rates than intermediaries. IDM's IMT-HUB platform uses intelligent routing with real-time quality monitoring.
4. Timing and Throttling
Send with time-zone awareness and respect carrier-specific rate limits. Burst traffic can lead to temporary blocking.
Conclusion
With a 98% open rate, A2P SMS remains the most reliable business messaging channel. With the right best practices you maximize delivery rates and ROI.