SMS Text Messaging

Highly reliable and low delivery latency SMS gateway.
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SMSCarrier provides a highly reliable SMS gateway service enabling aggregators and businesses to send high volumes of SMS messages to mobiles all around the world.  We specialise in providing Mobile Terminated (MT) outbound bulk SMS messaging services with coverage to over 900 mobile network operators worldwide. We've been providing wholesale SMS gateway services to large and small organisations since 1999.

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Enterprise/business customers only

Our reliable bulk SMS API is accessible at multiple geographically separate sites so that customers sending bulk SMS can enjoy 100% availability of our SMS gateway for MT SMS. Our wholesale SMS prices allow the sending of bulk SMS at extremely competitive prices and our SMSCarrier-N service is particularly suited to those wishing to achieve the best price available on any given day.
HSL Mobile® operates the SMSCarrier SMS gateway service and also operates other messaging services. If you require inbound SMS services / MO SMS (i.e. Virtual Mobile Numbers or Virtual SIM Hosting), SMS-based solutions or wish to use other APIs such as HTTP, SMTP or Web Service (SOAP/XML) then please visit

Bulk SMS coverage & pricing

Network coverage and pricing for bulk SMS to over 900 mobile networks.

Sending SMS through an SMS gateway using SMPP (Short Message Peer-to-Peer Protocol) allows your application, whether it's sending SMS text messages to your customers, notifying staff of important information or updating a remote device, to quickly send a message and know when it's been delivered. Secure SMPP sessions are supported using TLS. SMPP is the best SMS API for handling high volumes, reliability and avoiding SMS gateway supplier lock-in.

SMSC simulator

Test your application's SMS messaging capability with our freely accessible SMSC simulators, available via SMPP.