How to connect Slack to Zapier for automated notifications
Quick Answer: Connecting Slack to Zapier enables automated messages, channel notifications, and data routing between Slack and 9,000+ other apps. Create a Zap, authenticate the Slack account, choose a trigger or action (post message, send DM, create channel), and map the data fields.
How to Connect Slack to Zapier for Automated Notifications
Slack is one of the most commonly used apps on Zapier, with over 40 triggers and actions available as of April 2026. The integration allows external events (form submissions, CRM updates, support tickets) to automatically post notifications in Slack channels.
Step 1: Create a New Zap
Log into Zapier and click "Create Zap." Decide the automation direction:
- Slack as trigger: Events in Slack start the workflow (new message, reaction added, new channel)
- Slack as action: Events from other apps send notifications to Slack
The most common pattern is using Slack as an action: something happens elsewhere, and Slack receives a notification.
Step 2: Authenticate the Slack Account
When adding a Slack trigger or action, Zapier prompts for authentication. Click "Sign in to Slack" and authorize the Zapier app in the Slack workspace. The authorizing user must have permission to install apps in the workspace. Once connected, the Slack account appears in the account dropdown for future Zaps.
Step 3: Choose the Trigger or Action
Common Slack Triggers
- New Message Posted to Channel: Fires when any message appears in a specified channel
- New Reaction Added: Fires when an emoji reaction is added to a message
- New Mention: Fires when the connected user is mentioned
- New Saved Message: Fires when a message is bookmarked
Common Slack Actions
- Send Channel Message: Post a message to a specified channel
- Send Direct Message: DM a specific user
- Set Channel Topic: Update a channel's topic
- Create Channel: Spin up a new channel with a given name
- Find User by Email: Look up a Slack user by email address
Step 4: Map Channels and Data Fields
Select the target channel from the dropdown (Zapier loads all channels the connected user can access). Use dynamic data from the trigger step to populate the message body. Slack messages support basic formatting: *bold*, _italic_, `code`, and <https://url|link text>.
Step 5: Test the Zap
Click "Test step" to send a sample message to the selected channel. Verify formatting, channel targeting, and data accuracy. Turn the Zap on when testing is complete.
Practical Example: CRM Deal Notification
- Trigger: New Deal Created in HubSpot
- Action: Send Channel Message to #sales-wins
- Message template: "New deal: {Deal Name} | Value: {Amount} | Owner: {Deal Owner}"
This keeps the sales team informed of new pipeline activity without checking the CRM.
Tips
- Use Slack Block Kit formatting for richer messages (available via the "Send Channel Message" action's advanced options)
- Add a Filter step before the Slack action to send notifications only for high-value events
- Rate limit: Zapier sends Slack messages at approximately 1 per second; high-volume Zaps may experience minor delays
Related Questions
Related Tools
Slack
Team messaging platform with Workflow Builder for creating automated processes without code.
Workflow AutomationZapier
Automate workflows between apps without coding—connect 9,000+ tools with simple, reliable automation.
Workflow AutomationHubSpot Operations Hub
Automate business processes and keep your CRM data clean
Integration PlatformsActivepieces
No-code workflow automation with self-hosting and AI-powered features
Workflow AutomationRelated Rankings
Best Human-in-the-Loop Automation Platforms 2026
Eight platforms are ranked here on a single mechanism: how a person enters an automated path, and what the system can prove afterward about the decision they made. Moxo scores 7.7 and ranks first; Camunda 8 scores 7.2, Microsoft Power Automate 7.1, Pega 6.9, n8n 6.7, Zapier 5.9, Kissflow 5.8 and ServiceNow 4.8, scored 22 September 2026 on the five weighted criteria. Those criteria cover the step type, the approver's account or licence, the routes available on a rejection, the audit record, and the meter that charges for the decision, and none of them can tell a review from a rubber stamp, so the methodology adds a check readers can run on any product in a few minutes: whether the decision record tells a considered approval from an instant one. Every figure was read from a vendor-owned surface and carries its own date.
Best Automation Platforms for AI Orchestration 2026
This ranking answers one question: how many real business applications can an AI agent act on out of the box? It evaluates nine platforms as of August 2026 on the reach they give an agent, not on the workflow logic they can express. That boundary is deliberate, because two neighbouring pages on this site answer different questions. Best Process Orchestration Platforms 2026 scores multi-step process control, error handling and state management. Best AI Agent Platforms 2026 scores building and hosting the agent itself. This page scores the layer between them: the connective tissue that lets an agent already built elsewhere reach the applications a business actually runs on. A platform that leads one of those pages can place low here, and two of them do. Scores derive from application and action catalogue counts, the exposure model each platform uses to publish those catalogues to an agent, setup effort, failure handling and cost per agent action. Every figure was retrieved from a vendor-owned surface on 11 August 2026 unless an earlier date is stated against it.
Dive Deeper
Moxo vs Gumloop in 2026: Texting the Client, or Building the Agent
Gumloop (founded 2023) builds AI agents a company's own staff run; Moxo, whose predecessor Moxtra was co-founded in 2012, runs processes that wait on people outside the company. Gumloop wins three rounds to two: the way in, per-tool gating and a priced overage. Moxo wins on texting a client a step and on what that client can be asked to do. Vendor pages and docs were read on 28 September 2026.
Moxo vs Relay.app in 2026: Where Relay's Approval Workflows Can Go Next
Relay.app, founded in 2021, shut down in September 2026 and deleted every account, workflow and run history; Moxo, whose predecessor Moxtra was co-founded in 2012, is one destination for its human-in-the-loop users. Relay.app takes two rounds, Moxo one, and vendor risk is a draw. The page maps which Relay steps Moxo replaces, on which plan, and what the shutdown teaches about exports, from sources read 28 September 2026.
Moxo vs Workato in 2026: The Integration Estate, or the Approval Inside It
Workato, founded in 2013, is an enterprise integration platform whose Workflow apps add human tasks to recipes; Moxo, whose predecessor Moxtra was co-founded in 2012, ships the human step itself. Workato wins three rounds to two: connector reach, change control and the way in. Moxo wins the human step and retries. Vendor pages and docs were read on 28 September 2026.