One API. Every channel your customers actually use.
Deliver mission-critical WhatsApp, RCS, SMS, and Email with automated failover, millisecond latency, and global routing intelligence through a single unified endpoint.
First 10,000 requests free every month. No credit card required.
One integration. One dashboard. One contract.
Instead of managing four separate vendor relationships, API docs, billing cycles, and support contacts for WhatsApp, RCS, SMS, and Email, get all four channels through a single integration, a single dashboard, and a single contract.
Channels we offer
Deliver across all major messaging channels through a single unified infrastructure endpoint.
Efficiently manage customer interactions with the WhatsApp Business API.
Enhance your messaging experience with RCS. Send and receive multimedia messages.
Streamline your communication with a bulk messaging solution Reach thousands.
Deliver high-volume transactional and marketing emails with industry-leading inbox placement.
One integration. One dashboard. One contract.
Instead of managing four separate vendor relationships, API docs, billing cycles, and support contacts for WhatsApp, RCS, SMS, and Email, get all four channels through a single integration, a single dashboard, and a single contract.
Why developers choose Accelbiz
A single API across WhatsApp, RCS, SMS, and Email, with documentation written for how you actually build — not generic vendor boilerplate.
One API shape
Same authentication, request format, and webhook structure across all four channels.
Real documentation
Clear request/response examples, not auto-generated reference dumps.
Direct support
Reach a real integration engineer, not a ticket queue.
Architected for high-consequence customer communication
When dropped messages mean lost transactions or failed authentications, our deterministic waterfall guarantees delivery within specified latency parameters.
OTP & Two-Factor Authentication
Channel fallback ensures instant code delivery under 3 seconds even during carrier outages.
Transactional Order & Delivery Alerts
WhatsApp and RCS rich cards with live map tracking links and interactive reschedule buttons.
High-Volume Marketing Broadcasts
Segmented multi-channel campaigns with built-in opt-out handling and template approval queues.
Two-Way Customer Support Relay
Bidirectional webhooks that pipe inbound customer replies directly into Zendesk, Freshdesk, or custom internal tooling.
Enterprise-grade governance and data sovereignty
Every message is encrypted in transit and at rest with customer-managed keys. Maintain full compliance under India's DPDP Act with in-country data residency, automated PII redaction after delivery confirmation, and strict opt-in consent verification logs.
One API. Every channel your customers actually use.
Get your live API keys in less than two minutes. Start sending across WhatsApp, RCS, SMS, and Email today.