Relayion
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Logistics

Fleet & driver dispatch

Dispatch teams coordinate drivers across shifts, routes, and job queues. A consistent number means drivers always know where instructions come from and can reply to acknowledge with no app install, no login, and no push notification to miss.

SMS · OUTBOUND
[Dispatch] Job #449 assigned. Pickup at 14 Maple St at 10:30am. Reply ACK.
↩ ACK

Field teams and delivery drivers are not always in front of a screen. An app-based dispatch system requires every driver to have the app installed, logged in, and notification-enabled on their personal device. SMS requires none of that. Every driver already has it, and it works on any phone regardless of OS version or storage space.

When a job is assigned, your dispatch system sends an outbound message with the driver's number, the job details, and the device ID of your dispatch phone. The driver receives the assignment and replies ACK. The reply arrives at your webhook automatically, your system marks the job as acknowledged, and dispatch knows the message was read without calling the driver to confirm.

The same API handles customer-facing ETAs. Use a different device ID for a customer-facing number and your system can send arrival updates automatically as the driver progresses through the route. Two numbers, same API key, controlled separately.

Reply events trigger the next step in your dispatch logic automatically. A driver who replies DONE closes the job. A driver who replies DELAY triggers a reroute. The conversation is structured SMS, not free-form chat, and your system handles each keyword as a workflow event.

Assign a job to a driver
POST /api/v1/outbound HTTP/1.1
Authorization: Bearer rlyn_bfb4d3c9…
{
"recipientNumber": "+61 4 1234 5678",
"body": "[Dispatch] Job #449 assigned.
Pickup at 14 Maple St at 10:30am. Reply ACK."
}
// Driver replies ACK, arrives at your webhook
{ "event": "inbound.received", "data": { "body": "ACK" } }
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