Click-to-Call (C2C) API enables automated voice call initiation between two parties through an intermediary agent. When triggered, the…
V1
CPaaS · CCaaS · UCaaS
Tata Communications Kaleyra
Reach customers on every channel. SMS, WhatsApp, MMS, RCS, voice, video and email plus contact-centre and cloud communications delivered at global scale through the Kaleyra platform.
60Bn+
annual interactions
190+
countries
4000+
customers
99.9%
delivery SLA
Featured APIs
Kaleyra APIs
Build with these endpoints in the sandbox. Combine them with any other suite through the App Builder.
The Kaleyra platform allows you to send email as a communication channel to communicate with end users.
V1
Kaleyra Bulk SMS API enables simultaneous SMS delivery to multiple recipients with a single API call. Perfect for mass notifications…
V1
Kaleyra SMS API enables sending transactional SMS messages to individual recipients with template-based messaging support.
V1
Kaleyra WhatsApp Business API enables sending rich WhatsApp messages through the official WhatsApp Business Platform. This API supports…
V1
A WhatsApp Campaign for V2 WhatsApp Business Account (WABA) is a scalable way for businesses to send WhatsApp messages to end-users using…
1.0.0
10B+
API calls processed monthly
About the product
See the API catalog
About Kaleyra
Kaleyra is Tata Communications’ communications platform powering over 60 billion customer interactions a year across 190+ countries. One platform spans CPaaS messaging and voice, CCaaS contact centre, and UCaaS cloud communications.
Reach customers on SMS, WhatsApp Business, MMS, RCS, voice, video and email, then scale into full contact-centre and employee communications without stitching vendors together.
Kaleyra
What you can build
Core capabilities
Everything you need to message, verify, talk to and support customers, programmatically.
Omnichannel messaging
SMS, WhatsApp Business, MMS and RCS from a single, consistent API.
Verification & 2FA
One-time passcodes over SMS, voice and WhatsApp with fallback routing.
Voice & video
Place, receive, bridge and record programmable calls, plus embedded video
Contact Centre (CCaaS)
Kaleyra TX and CCaaS Cloud, with Genesys, Amazon Connect and Webex.
Chatbots & conversations
AI chatbots and unified, stateful threads across every channel.
Analytics & reports
Delivery, engagement and conversion metrics in real time.
10B+
API calls processed monthly
Your idea is one prompt from a working prototype.
Start in the sandbox for free. Build with the App Builder, test against live APIs, and commercialise when you're ready.