Can I send WhatsApp messages via Zapier?

Yes — via a Zapier connector that uses the official WhatsApp Cloud API. PostEngage.ai publishes a free Zapier integration with actions for sending messages, templates, adding contacts, and triggering flows. You cannot send via the WhatsApp consumer app — only via Cloud API.

What can I automate via WhatsApp + Zapier?

Anything Zapier triggers: send WhatsApp on new Google Sheets row, on Typeform submission, on Stripe payment, on Calendly booking, on Mailchimp signup, on HubSpot deal update. Plus: push incoming WhatsApp messages out to Slack, Airtable, Notion, or any CRM via Zapier.

Is the Zapier integration free?

PostEngage Zapier integration is free. You pay only Meta per conversation. Zapier itself has a free tier (100 tasks/month) and paid plans starting at $19.99/month. Free Zapier tier covers most low-volume automations.

Can Zapier trigger free keyword replies?

Yes. PostEngage Zapier action "Trigger Keyword Flow" fires any of your free keyword automations programmatically. So a new HubSpot deal can fire your VIP welcome flow without sending a template — useful for staying within the 24-hour service window.

Can I use Make or n8n instead of Zapier?

Yes. PostEngage also has a native Make (formerly Integromat) integration and a generic webhook for n8n, Pabbly, and any platform that can call HTTP endpoints. The same actions are available across all platforms.

How to Integrate WhatsApp With Zapier in 2026: Connect Anything to Your WhatsApp (Tutorial)

What You'll Need

A free Zapier account (zapier.com).
A free PostEngage.ai account with WhatsApp Cloud API connected. Need help connecting? See our Cloud API setup guide.
At least one approved marketing template (for outbound sends).
A trigger app of your choice (Sheets, CRM, etc).

Step-by-Step: WhatsApp + Zapier in 15 Minutes

Step 1: Connect WhatsApp Cloud API in PostEngage

Step 2: Generate a PostEngage API key

In PostEngage, go to Settings > API Keys > Create Key. Give it a name (e.g. "zapier-prod"). Copy the key — it's shown only once.

Step 3: Create a new Zap

In Zapier dashboard, click Create Zap. Pick your trigger app — for this example, Google Sheets. The trigger event: New Spreadsheet Row.

Step 4: Search for PostEngage as the action

Click + Action. Search PostEngage. Pick one of these actions:

Send WhatsApp Template — for outbound messages (requires approved template).
Send WhatsApp Message — for inside the 24-hour service window.
Trigger Keyword Flow — fires one of your free keyword automations programmatically.
Add Contact — adds the contact to your PostEngage audience.
Tag Contact — adds tags for segmentation.

Step 5: Authenticate with your API key

Zapier prompts for your PostEngage API key. Paste it. Zapier validates and shows your connected WhatsApp number.

Step 6: Map fields from trigger to action

For Send Template, map:

To Phone → Google Sheets column "phone"
Template Name → choose from dropdown
Variable 1 → Sheets column "name"
Variable 2 → Sheets column "order_id"

Step 7: Test the Zap

Zapier shows a sample row. Click Test action. A test WhatsApp message should arrive at the mapped phone number within 5 seconds.

Step 8: Turn on the Zap

Toggle On. Now every new row in your sheet triggers a WhatsApp message automatically. Same flow works for any of the 6,000+ Zapier apps.

5 Pre-Built Zap Recipes

1. Calendly booking → WhatsApp confirmation

Trigger: New Calendly invite. Action: Send WhatsApp Template with meeting details, location link, and a cancellation button.

2. Typeform submission → WhatsApp follow-up

Trigger: New Typeform response. Action: Trigger Keyword Flow "lead_welcome" — fires your free welcome sequence inside the 24-hour service window.

3. Stripe payment → WhatsApp receipt

Trigger: New Stripe charge. Action: Send WhatsApp Utility Template with receipt, invoice PDF, and support handle.

4. New HubSpot deal → WhatsApp internal alert

Trigger: New deal in "Qualified" stage. Action: Send WhatsApp message to founder's number with deal value and contact link.

5. WhatsApp inbound → Slack/Airtable

Trigger (PostEngage): New WhatsApp Message. Action: Slack message in #sales OR Airtable row. Two-way sync complete.

Common Issues and Fixes

"Authentication failed"

Regenerate the API key. The shown key is one-time; Zapier may have an old or partial copy. Paste the full new key.

"Template send fails"

Template must be approved by Meta first. Check Templates > Status in PostEngage. Marketing templates need business verification too.

"Wrong phone format"

Phone must be in international format with no spaces, no + sign (e.g. 919876543210). Use Zapier Formatter to strip spaces and add country code.

"Zap exceeded free tier"

Zapier free tier is 100 tasks/month. Upgrade to Starter ($19.99/mo) or use Make (1,000 free ops/month) as an alternative.

Verify Your Zap

Four checks:

1. Run a real trigger event (new Sheets row, Calendly booking, etc).
2. Confirm the WhatsApp message arrives in under 10 seconds.
3. Check Zapier task history — the run should be marked Successful.
4. Check PostEngage Analytics > Conversations — the message should appear with source "zapier".

The PostEngage Shortcut

PostEngage has pre-built Zap templates you can clone with one click. Visit Integrations > Zapier > Templates:

0-60s

60-120s

In PostEngage, browse Zap templates. Click Use Template on a Calendly or Typeform recipe.

120-180s

Connect your trigger app in Zapier. Map fields. Test. Turn on.

Looking to build a full chatbot instead? Read our WhatsApp chatbot tutorial.

FAQ

Can I send WhatsApp via Zapier?

Yes, via PostEngage's free Zapier connector on the official Cloud API.

Does Zapier have an official WhatsApp integration?

Multiple third-party connectors. PostEngage adds zero Meta markup; others often add 15-30%.

What can I automate?

Anything Zapier triggers: Sheets, Typeform, Stripe, Calendly, HubSpot, Salesforce, Mailchimp, Notion, Slack — 6,000+ apps.

Is the integration free?

PostEngage integration is free. Zapier has a free tier of 100 tasks/month.

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How to Integrate WhatsApp With Zapier in 2026