↔

How to Integrate Trello with Slack

Native vs Make vs n8n vs Relay, setup time, cost & field mapping

Integration Status

Trello (Project Management) has a native integration with Slack (Communication). Sync Trello card updates to Slack channels for real-time team notifications and automated task assignments. Typical setup takes around 20 minutes.

Data Flow Architecture

Trello

→ One-Way

Standard API Latency

Slack

API Tier

REST API v3

Auth Method

OAuth 2.0

Rate Limits

Standard SaaS Limits

Integration Overview

Connect Trello boards to Slack channels. Automate task updates and eliminate manual entry, enhancing team collaboration and productivity instantly.

Primary Use Case

Sync Trello card updates to Slack channels for real-time team notifications and automated task assignments.

Setup Complexity

medium

Typical Setup Time

20 minutes

Automate Trello + Slack with n8n

Free, open-source workflows you can import into n8n in one click, no subscription required.

Try n8n free, open source, self-hostable → Browse all n8n templates

Handle Slack work without building a workflow

Notis is an AI assistant you message in Slack. Send a voice note or forward a thread and it drafts the reply, files the notes into Trello, and schedules the follow-up. There is no canvas to design and nothing to maintain when the workflow changes.

Reachable from WhatsApp, Telegram, Slack, iMessage, and email, with 1,000+ connected apps.

Start a free 7-day trial → Compare Notis to Make & n8n →

Code INTEGRATESTACK for 10% off. Affiliate link, at no extra cost to you.

Ready to automate? We have a template for you.

Copy this Trello → Slack blueprint, open Make.com, paste it into the canvas, and your workflow is ready to configure.

trello-slack-blueprint.json

{
  "name": "Trello → Slack Sync",
  "flow": [
    {
      "id": 1,
      "module": "trello:WatchCards",
      "version": 1,
      "parameters": {},
      "mapper": {},
      "metadata": {
        "designer": {
          "x": 0,
          "y": 0
        },
        "restore": {},
        "expect": [
          {
            "name": "body",
            "type": "text",
            "label": "Body"
          }
        ]
      }
    },
    {
      "id": 2,
      "module": "slack:PostMessage",
      "version": 1,
      "parameters": {},
      "mapper": {},
      "metadata": {
        "designer": {
          "x": 300,
          "y": 0
        }
      }
    }
  ],
  "metadata": {
    "instant": false,
    "version": 1,
    "scenario": {
      "roundtrips": 1,
      "maxErrors": 3,
      "autoCommit": true,
      "sequential": false
    }
  }
}

Download .json

Open Make.com

Frequently Asked Questions

How do I connect Trello to Slack? ▼

There's no native integration. To connect them, you will need a middleware tool like Make or n8n.

Is the connection between Trello and Slack secure? ▼

Yes. This integration typically uses OAuth 2.0, meaning you grant permission via a secure login window. You do not need to share your raw password, and you can revoke access at any time from your Trello security settings.

Is the sync one-way or two-way? ▼

This is typically a one-way sync: Trello → Slack. Changes in Slack do not sync back to Trello.

Will existing data in Trello sync to Slack? ▼

Usually, no. Most native integrations are "forward-looking," meaning they only sync data created or updated *after* you activate the connection. To move historical data, you will likely need to perform a one-time CSV export/import manually.

Can I sync custom fields? ▼

Native integration is limited to standard fields. For custom field mapping, use an automation tool.

Can I add approval steps before syncing? ▼

Native integrations can't do this. For workflows that need human review (e.g., "Manager must approve before creating invoice"), use Make or n8n to pause the workflow on a webhook or Slack approval before it continues.

🗂️

Using Trello and Slack with other tools?

Build your full stack map, see all connections and gaps at once.

See your full stack →