Communication API and Messaging API Provider
Add SMS, WhatsApp, RCS, voice and email to your app with simple REST APIs. One account, one balance and one report for every channel, with PHP, Node.js and Python samples.
- 2016Serving businesses since
- 15,000+Businesses
- APIREST + SMPP
Messaging API for every channel
Pick the channel per message, or use several together.
SMS API gateway
Promotional, transactional and OTP SMS over HTTP. SMS API docs →
WhatsApp messaging API
Template and session messages on the official WhatsApp Business API. WhatsApp API →
RCS messaging API
Rich cards, carousels and buttons. RCS API →
Voice messaging API
Voice broadcasts and text-to-speech calls. Voice API →
Email messaging API
Transactional email by API or SMTP. Email API →
SMPP for high volume
Bind directly for large OTP and alert traffic. SMPP →
Communication API integration
Works with the tools you already use.
Communication API for CRM
Send SMS and WhatsApp from Zoho, HubSpot or your own CRM through its workflows.
Communication API for ERP
Invoice, dispatch and payment messages from your ERP or billing software.
Messaging API for mobile apps
Call the API from your backend for OTPs and notifications in Android and iOS apps.
Messaging API for fintech
OTPs and alerts on transactional routes. OTP API →
No-code integration
Pabbly Connect, Make and n8n. Automation guide →
Communication API documentation
Docs, OpenAPI file and samples on GitHub.
Developer messaging tools
Every API is a plain HTTPS request with JSON responses, so it works from any language: PHP, Node.js, Python, Java, .NET or Go. Use one API key for all channels, check your balance and pull delivery reports by API, and test with your own number before going live.
Building an AI agent? Our APIs are easy for AI agent frameworks and workflow tools to call. See the agentic AI communication platform.
Why businesses choose us
Since 2016, trusted by 15,000+ businesses.
DLT help included
Our team helps with entity, header (sender ID) and template registration.
Direct operator routes
Promotional, transactional and OTP SMS on Airtel, Vi, BSNL and Jio routes.
Live delivery reports
See the delivery status of every message in real time.
HTTP API and SMPP
Developer-friendly SMS API with code samples and SMPP for high volumes.
More than SMS
WhatsApp Business API, RCS, voice, IVR, missed call and email on one account.
Human support
Help on phone, WhatsApp and email, Monday to Saturday.
Frequently asked questions
What is a communication API?
A communication API lets your software send SMS, WhatsApp, RCS, voice and email messages through simple HTTP requests, without building telecom connections yourself.
Is there one API for SMS and WhatsApp?
Yes. One Bulk SMS India account and API key gives you SMS, WhatsApp, RCS and voice APIs, with one balance and one report.
Which programming languages are supported?
Any language that can make an HTTPS request. We share samples for PHP, Node.js, Python and cURL.
Do you provide an SDK?
We provide ready code samples and an OpenAPI file on GitHub that you can use to generate a client in your language.
How is the communication API priced?
You pay per message, by channel, route and volume. See how CPaaS pricing works or contact our team for a quote.
Ready to get started?
Tell us what you want to send and how many messages a month. Our team will set up a free demo.