Take the first step towards peace of mind that your SMS numbers are working.


Talk to one of our experts and learn how Spearline SMS Assure will help proactively monitor your SMS numbers to ensure they are working for your customers, including:


  • Send and delivery confirmation for SMS messages

  • Real-time reporting and analytics

  • Identify issues before your customers are impacted

To learn about how we handle and protect your personal data, please see our privacy statement.


We work with truly global brands

Alliance_Group_logo_DarkCvent - DarkDialoga - DarkAircall - DarkBandwidth - Dark



Measure what matters!



Test your SMS messages

Run a test to identify if you can receive an in-country SMS message sent from a Spearline SMS number to your own customer-supplied number.



Test your SMS numbers in 30 countries

SMS Verifier is available in the same countries that Spearline mobile testing is available in. Find out which countries here.



API for SMS Assure only

You can use our API for SMS Assure only, while still relying on the Spearline platform interface for all of your other test types.


SMS Error Message

Query the API for an error message that will show if the message was received or not, rectifying any issues. 


Destination and country code

After a test has run, you will be able to access information such as the destination and country code.



Access a report which shows the timestamp of when the SMS message was sent or received.




SMS Assure product video 280820


Spearline gives us a very flexible dashboard with a user-friendly interface for managing our numbers and scheduling exactly when our tests get run.
Arnie Chencinski
Senior Voice Network Engineer, Zoom Video Communications
Spearline provides first rate audio quality testing tools that allow us to enhance our customers' experience. I cannot overstate the value of their solutions.
Rosie Scott
Director of Vendor Management EMEA, PGI
The platform has been exceptional in our ability to drive carrier improvements, customer fault investigations and alerting of any country issues.
Gregor Rennie
EMEA Carrier Account Manager, Intrado
Spearline gave us better visibility on the quality of our service, and allowed us to detect and solve issues much faster. It contributed to improving call quality and customer satisfaction.
Pierre Baptiste Bechu
Tech Co-Founder, Aircall

Still not sure?
If you're undecided about booking a demo, why not get in touch with a member of our team

or book a demo now