SMSC simulator, SMPP Tester
- SMPP load test tool
- SMSC simulator
- Free for non-commercial use, contact us to get a commercial license
- Makes measurements, builds charts and reports:
- submit_sm delays
- DLR (deliver_sm) delays
- MDR: list of sent and received SMSes
- Pending DLRs (lost DLRs, submit_sm without deliver_sm)
- Displays reports: MDR, Pending DLRs
- Windows desktop GUI and web interface
Use cases
- Performance testing of your SMS servers and infrastructure
- Monitoring SMS submission delay of live SMSC server, sending email alerts if your SMS server goes down or becomes overloaded
- Monitoring quality and stability of your IP networks and SMS servers
- SMPP load testing, SMPP benchmarking
- Simulating SMPP server and SMSC vendor (SMSC simulator). Regular flows and abnormal test cases
- Simulate SMPP DLR responses with custom message_state and network_error_code: DELIVERED, UNDELIVERED, EXPIRED, REJECTED or other. With configured percentage and random delays before sending DLR response
- Simulate SMPP bind drops
Screenshots
Load test configuration
Test results
SMSC Simulator
MDR
Pending DLRs
News
2026-04-06 performed a 2-day stability test of Alaris SMS Platform with a small load of 0.2 SMS/second. Peak submission delay was 10 seconds, and maximum number of messages in queue was 3. See below:
2026-04-26 performed a 10-day stability test of Ozeki SMS Gateway with a load of 1 SMS/second. The test has detected a downtime of 45 minutes on 8th day of the test, it was failure of data center, not Ozeki SMS Gateway. See below:
2026-04-26 performed a 7-day stability test of Ozeki SMS Gateway with a load of 10 SMS/second.
The test has detected 16-second and 4-second outages. Pending submit_sm queue length reached 120 and 20 messages. See below:
