Webhooks Explained for Marketers (Jargon-Free)

Integrations6 min read

A webhook is a message that one tool sends to another tool as soon as something happens. Not on a fixed schedule, but real-time: "something just happened, here are the details". Important for marketers because they can trigger workflows directly (no polling, no Zapier delay). 90% of the work is already done by your tool — you just need to know the webhook URL and set up where it should go.

What exactly is a webhook?

Imagine: a Shopify store sells a product, and you want HubSpot to know immediately. Two ways:

  • Polling: HubSpot asks Shopify every 5 minutes "are there new orders?" — works, but slow and wastes requests.
  • Webhook: At the moment of the order, Shopify sends a message to HubSpot: "there's an order, here are the details." Direct, real-time.

A webhook is simply "tool A calls tool B as soon as something happens." As a marketer, you don't need to know the technical details (HTTP POST, JSON payload) — your tool handles that.

Why should a marketer care?

Three concrete benefits:

  • Real-time triggers. A customer buys → 30 seconds later, sales gets a Slack notification. No 5-minute delay like with polling.
  • Fewer Zapier tasks. A webhook trigger in Zapier costs one task; a polling trigger often costs more (to retrieve the data).
  • Custom integrations without code. Many marketing tools (HubSpot, ActiveCampaign, Klaviyo) accept incoming webhooks via a form field. Paste the URL, done.

How do you know if a tool supports webhooks?

Three places to check:

  • Settings → Integrations / Notifications / Webhooks. Almost every modern SaaS has it here.
  • The API documentation. Search for "webhook" in your tool's docs.
  • Help articles. Search for "[tool name] webhook" in Google.

Tools that support it by default: Shopify, HubSpot, Mailchimp, Calendly, Typeform, ActiveCampaign, Stripe, Klaviyo, Pipedrive, Asana, Trello, Slack, Notion (recently added).

Practical example: webinar registration → Slack

Goal: as soon as someone registers for your webinar via Typeform, the marketing team receives a Slack notification.

  • 1. In Slack: create an "Incoming Webhook" for your #marketing channel. Copy the webhook URL.
  • 2. In Typeform: open your form settings → Webhooks → "Add a webhook" → paste the Slack URL.
  • 3. Test: fill in your form. Within 5 seconds, the message will appear in Slack.

Total setup: 5-10 minutes. No Zapier needed, no code, no maintenance.

What a marketer doesn't need to learn

Terms you can ignore without worry:

  • HTTP POST — the way tools send data. Not your problem.
  • JSON payload — data format. Tools accept JSON by default.
  • Authentication / Signing — for security; tools handle it via API keys or secrets. Just follow the instructions.
  • Retry logic — what happens if a webhook fails. Good tools retry automatically.

Common mistakes

  • Sharing webhook URL publicly. A Slack webhook URL is an API key. Do not include it in screenshots or docs.
  • Not testing before going live. First send a test payload (Typeform and Shopify have a "test webhook" button) before you go live.
  • Not monitoring webhook failures. A webhook can fail silently. Periodically check if messages are actually arriving.
  • Wanting too much complexity. Webhook → Zapier → another tool often works easier than direct webhook → end tool.
  • Too many notifications. A webhook sends every event. 200 form submissions per day = 200 Slack notifications. Filter or bundle.

Frequently asked questions

Can I disable a webhook?

Yes, at any time. Go to the webhook configuration in your source tool (Typeform, Shopify, etc.) and set it to inactive or delete it.

What if a webhook fails?

Good tools retry automatically (Shopify tries 19 times over 48 hours, HubSpot similarly). In case of persistent errors, you'll receive a notification. For custom scripts: build in retry logic.

Do webhooks also work with older systems?

Many legacy systems (old CRMs, on-premise ERPs) do not support webhooks. For these, you need middleware that connects them to a modern API.

What is the difference between a webhook and an API?

An API is what you actively call (tool A asks tool B "give me data"). A webhook is the opposite (tool B sends data to tool A as soon as something happens). API = pull, webhook = push.

How many webhooks can I set up?

Varies per tool. Shopify supports 100+ per store, HubSpot works similarly. For most SME cases, 5-15 webhooks are more than enough.

Do I need a developer to use webhooks?

For incoming webhooks (tool A → Slack, Zapier, HubSpot via a form field): often not. For outgoing webhooks to a custom system or complex transformations: usually yes.

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