Omnichannel Messaging
Reach customers on SMS, RCS, WhatsApp, email, voice and push through a single API with automatic failover.
Most companies bolt together three or four vendors to reach customers — one for SMS, another for WhatsApp, a third for email. WeZend collapses that into a single, channel-agnostic API. Send a message and let the platform pick the optimal channel, fall back automatically when one fails, and keep the entire thread in one unified conversation. Every message is logged against the customer's profile, so context follows the customer across channels.
Benefits
Why it matters
One integration, six channels
Ship SMS, RCS, WhatsApp, email, voice and push without maintaining six SDKs and six billing relationships.
Automatic failover
If a carrier or channel fails, WeZend reroutes to the next best channel within your rules — no undelivered messages.
Unified conversation history
Every inbound and outbound message across channels is threaded to one customer profile for full context.
Capabilities
What you can do
Smart channel routing
Rules and cost-based routing pick the cheapest reliable path per destination and message type.
Delivery receipts & tracking
Real-time DLRs, open and click tracking, and a Delivery Inspector that surfaces why anything failed.
Templates & personalisation
Reusable, localisable templates with merge fields drawn straight from the customer profile.
Compliance guardrails
Quiet hours, frequency caps, consent checks and one-click unsubscribe enforced before every send.
API example
Build it in minutes
curl https://api.wezend.com/v1/messages/send \ -H "X-API-Key: $WEZEND_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "to": "+4512345678", "channel": "auto", "fallback": ["whatsapp", "sms"], "template": "order_shipped", "variables": { "name": "Mette", "tracking": "DK9911" } }'Frequently asked questions
Which channels are supported?
SMS, RCS, WhatsApp Business, email, programmable voice and mobile push — all through the same send endpoint.
How does failover work?
You define an ordered fallback list per message or template. If delivery isn't confirmed within your window, WeZend retries on the next channel automatically.
Can I bring my own carrier?
Yes. WeZend supports bring-your-own SMPP and vendor credentials alongside built-in providers, with per-route cost control.
Related
SMS API
A carrier-grade SMS API with smart routing, delivery receipts and two-way messaging across 190+ countries.
WhatsApp Business
Official WhatsApp Cloud API access with templates, interactive buttons, media and conversational automation.
Email API & Marketing
High-deliverability email with double opt-in, one-click unsubscribe, open/click tracking and A/B testing.
Journey Orchestration
A visual, drag-and-drop builder for multi-step, cross-channel journeys triggered by real-time events.
One platform. Every customer interaction.
Replace your patchwork of messaging APIs, CDP and automation tools with a single engagement platform built for scale.
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