Reach your users in Slack, from the same Notifly workflow.

These are the fields the dashboard asks for when you connect Slack, quoted from the create form.

• Redirect URL in Slack. Add https://api.notifly.io/v1/integrations/chat/oauth/callback to your Slack app's OAuth redirect URLs. Slack returns users there; Notifly finishes the install and stores the workspace connection.
• Redirect URL in Notifly. Optional: where your user lands after that. Left empty, Notifly shows its own confirmation page telling them they can close the tab.
• Signing Secret. Used to verify requests Slack sends back to Notifly.

1. Sign in at app.notifly.io, open Integration Store in the sidebar and choose Connect Provider.
2. In the Connect Integration sheet, open the Chat tab (or search across channels), find Slack and choose Connect.
3. Pick the environment the integration belongs to. Development and Production keep separate integrations, so you can point each at a different Slack account or key.
4. Fill in Delivery Provider Credentials with the fields in the table above, then choose Create Integration.

A user connects once; after that a trigger only names the subscriber, and Notifly works out where in Slack the message goes.

// npm install @notiflyio/api@0.1.26
import { Notifly } from "@notiflyio/api";

const notifly = new Notifly({ security: { secretKey: process.env.NOTIFLY_SECRET_KEY } });

// 1. Create a connect link for the signed-in user (valid for 5 minutes).
const { result } = await notifly.integrations.generateConnectOAuthUrl({
  integrationIdentifier: "slack-workspace", // the Identifier of your Slack integration
  subscriberId: "user_123",
  autoLinkUser: true, // also link the Slack user who approves the install
});
// Redirect the user to result.url and let them approve your app in Slack.

// 2. From then on, workflows with a chat step reach them in Slack.
await notifly.trigger({
  workflowId: "deploy-finished",
  to: "user_123",
  payload: { service: "billing-api", status: "succeeded" },
});

Prefer plain HTTP? The same trigger is POST https://api.notifly.io/v1/events/trigger with an Authorization: ApiKey header and a body of { "name", "to", "payload" }.

• A user or a channel. Sent with chat.postMessage and the bot token from the workspace connection, to the linked Slack user or to a channel.
• Or an incoming webhook. Posted to the subscriber's webhook URL after a safety check on the address; Slack's ok reply is the only success.
• Your message options. overrides.providers.slack is merged in, converted to snake_case.
• Slack's answer. A refusal fails the step with Slack's own error code, recorded in the activity feed.

Choosing between the webhook and the bot, with a Node and cURL sample for each: send Slack notifications from your app.

Pairing Slack with an email or push provider in one workflow: Mailgun and Slack or Firebase and Slack.