Send Slack messages for new HubSpot contacts (API integration)

Instantly connect Slack and HubSpot with pre‑built templates using Postman Flows.

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Overview

Get real-time Slack notifications when new contacts are added in HubSpot. This API-first integration helps teams stay aligned on new leads, signups, or contact form submissions—without switching between tools. Ideal for sales, marketing, or support teams that want immediate visibility into CRM activity.

You can fully customize the message content, formatting, and logic based on your internal workflow needs.


How does the HubSpot and Slack integration template work?

This template uses Postman Flows to connect HubSpot and Slack to:

  • Monitor HubSpot CRM for new contact creation

  • Extract contact properties like name, email, source, and lifecycle stage

  • Format a custom message payload for Slack

  • Post the message to a designated channel using the Slack API


How to use the template

  • Set up authentication: HubSpot setup guide, Slack setup guide

  • Store your credentials as environment variables: Add your HubSpot and Slack API keys, plus the target channel ID.

  • Configure the flow: Customize the contact fields and message formatting.

  • Test and activate: Run the flow using test contact data to verify messages are sent correctly.

  • (Optional) Add branching logic to notify different channels based on contact type or lead source.


Get started in seconds

Fork this template to connect HubSpot and Slack in a way that suits your team’s workflow. With Postman Flows, you get full control over the structure and content of each message—plus the flexibility to scale or extend your automation over time.

Frequently asked questions

What is Postman Flows?

Postman Flows is a visual tool for building API workflows. You can connect APIs, services, and data in a drag-and-drop interface—without writing code. It’s built for developers and technical teams who want flexibility and control over how APIs interact.

Zapier is great for automating popular SaaS tools. Postman Flows is API-first—it gives you complete control over request structure, data transformations, and logic. You can use it to orchestrate internal APIs, chain service calls, and go beyond the limitations of most no-code tools.

Yes. Because Flows are built on top of Postman’s core platform, you can connect to internal APIs, services behind a firewall, or staging environments—just like you would with any Postman request. It’s ideal for platform teams and service orchestration.

No coding required—but if you’re comfortable with APIs and how requests are structured, you’ll feel right at home. Flows lets you visually define logic, pass data between steps, and build useful workflows without writing scripts.

You can trigger Flows manually or on a schedule using Postman Monitors. Programmatic triggers like webhooks or Postman’s public API aren’t supported yet, but they’re on the roadmap.

You can run Flows interactively in your browser. Use test environments to simulate different conditions, inspect step-by-step output, and refine your logic before going live.

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