Send Notifications to Slack

Slack (Incoming Webhook) posts a text message to Slack using an Incoming Webhook URL. Unlike Telegram and WhatsApp, this action does not use a saved connection. The webhook URL and message are configured directly in the workflow node.

Prepare a Slack Incoming Webhook

Create an Incoming Webhook in the Slack app or workspace configuration and copy its HTTPS URL. Keep the URL private: it grants the ability to post to the configured Slack destination.

Configure Slack (Incoming Webhook)

Add the Slack (Incoming Webhook) action to your workflow.

Paste the URL into Slack Incoming Webhook URL. The action requires the URL to start with https://hooks.slack.com/.

Enter the text in Message (supports {{trigger.fields.field_id}} tokens). Trigger field tokens can be interpolated before the request is sent.

Save the workflow and run a controlled test with a non-sensitive message.

Screenshot to add: Slack Incoming Webhook action with URL and Message fields

What the action sends and returns

The action sends an HTTPS POST with a JSON text field. It uses a 15-second request timeout and returns a success flag and HTTP status for a successful 2xx response. Network errors and non-2xx responses return an error. The action does not configure Slack Block Kit, interactive messages, or arbitrary Slack API methods.

A successful 2xx response confirms the webhook request was accepted by the endpoint, not that a person read or acted on the message. Do not expose the webhook URL in public workflow outputs or messages.