Compare the Top SMS API Providers in Japan as of February 2026

What are SMS API Providers in Japan?

SMS API providers, also known as SMS gateway providers, offer technology that enables software applications to send, receive, and track Short Message Service (SMS) messages over an internet protocol. They provide a way for businesses to communicate with customers in real-time via text as an integrated part of their overall communication strategy. These services are often cost-effective and easy to integrate into existing systems. Additionally, providers typically offer support in the form of user guides and documentation. Compare and read user reviews of the best SMS API providers in Japan currently available using the table below. This list is updated regularly.

  • 1
    Twilio Verify
    100% Protection from SMS pumping fraud with Verify. Verify is a fully managed API for multichannel user verification. And it now includes guaranteed protection from SMS pumping fraud with Fraud Guard. Terms apply. A multi-channel user verification solution in one turnkey API. Add seamless two-factor authentication to your onboarding and login flow with a single API that does the work of a full one-time password (OTP) delivery solution. Fraud Guard has already saved customers over $46 million by blocking over 398 million* fraud attempts. With first-to-market innovation, Fraud Guard offers 100% protection against SMS pumping fraud. Quickly integrate a ready-use solution that handles all your connectivity, channels, code generation, fraud monitoring, and more using native software—so you don’t have to. Reduce fraud across your multi-channel user experience with phone number verification that uses one API endpoint to validate users and detect fraud with minimal friction.
    Starting Price: $0.05/successful verification
  • 2
    TeleSign

    TeleSign

    TeleSign

    Deliver timely, personalized information through global SMS/RCS and voice cloud communications. Gain a deeper understanding of your customers from actionable global phone number and subscriber data intelligence. Code once and message your customers at scale using TeleSign’s Messaging API - complete with waterfall delivery between channels. TeleSign Messaging API includes SMS, RCS, and WhatsApp to help you build secure digital communications that connect you with your customers anywhere in the world. Integrate a single Messaging API and start sending reliable, secure SMS, RCS and WhatsApp messages to your customers today. Choose one or all three channels to broaden your programmable messaging strategy and expand your audience. Reach more customers with 120+ optimized points-of-presence and 700+ direct-to-carrier routes​.
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