Description
n8n-nodes-relayion
This is an n8n community node for Relayion, an SMS gateway that lets you send and receive SMS messages through a registered Android device.
Use this node to send SMS from any n8n workflow, query message history, browse conversations, and trigger workflows automatically when an SMS is received or a delivery status changes.
Installation
Operations
Credentials
Trigger Node Setup
Compatibility
Resources
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Installation
In your n8n instance, go to Settings > Community Nodes > Install and enter:
n8n-nodes-relayion
Restart n8n when prompted.
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Operations
Relayion (regular node)
| Resource | Operation | Description |
|—|—|—|
| Outbound Message | Send SMS | Submit an outbound SMS to a recipient number |
| Outbound Message | Get | Retrieve a sent message and its current delivery status |
| Outbound Message | List | List sent messages with optional filters (status, recipient, date range) |
| Inbound Message | Get | Retrieve a specific received message |
| Inbound Message | List | List received messages with optional filters (sender, date range, SIM slot) |
| Conversation | Get | Get a unified thread of all messages (sent and received) with a phone number |
| Device | List | List devices registered to this API key’s account, with SIM information |
Relayion Trigger
Starts a workflow automatically when Relayion fires a webhook event.
| Event | Description |
|—|—|
| inbound.received | An SMS was received on your device |
| outbound.queued | An outbound SMS was accepted and queued |
| outbound.dispatched | The send instruction was delivered to the device |
| outbound.sent | The device confirmed the SMS was submitted to the carrier |
| outbound.delivered | A delivery receipt was received from the carrier |
| outbound.failed | The SMS failed to send |
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Credentials
Create a Relayion API credential in n8n with the following fields:
| Field | Required | Description |
|—|—|—|
| API Key | Yes | Your API key from the Relayion console (rlyn_...). Found under API Keys. |
| Base URL | Yes | Default is https://api.relayion.com. Change this only if you are self-hosting. |
| Webhook Secret | No | Required only when using the Relayion Trigger node. See below. |
Each API key in Relayion has a default device and SIM. The node uses that default automatically. You can optionally override it per message using the Device ID and SIM Slot Index options on the Send SMS operation.
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Trigger Node Setup
The Relayion Trigger does not auto-register webhooks. Setup is a one-time manual step:
1. Add a Relayion Trigger node to your workflow and activate it. n8n will display a webhook URL.
2. In the Relayion console, go to Webhooks > Create and paste that URL.
3. Select the events you want to subscribe to and complete the form.
4. Copy the secret shown after creation.
5. Paste that secret into the Webhook Secret field of your Relayion API credential in n8n.
From that point, Relayion will call the webhook URL whenever a subscribed event occurs and n8n will start your workflow with the event payload.
> Important Always set the Webhook Secret in production. Without it, the trigger accepts any incoming POST request without verifying its origin.
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Compatibility
Tested against n8n version 1.0+.
Requires a Relayion account with at least one registered device and an active API key.
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