Technical GuideStep-by-Step⏱ 15 min read

Connect Squarespace to WhatsApp API: Zapier + Custom Code

Squarespace powers elegant business websites across India. While Squarespace has fewer native automation options than Wix or Webflow, WA.Expert connects via Zapier (recommended) or custom JavaScript code injection, enabling WhatsApp notifications for form submissions, e-commerce orders, and newsletter signups.

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Overview

What this guide covers

Squarespace has limited native webhook/automation support compared to Wix or Webflow. The two practical paths: Zapier (no code, works on all plans) or custom JavaScript injection in Squarespace's Code Injection feature (requires Business plan or above).

Method	Complexity	Best for
Zapier. Recommended for most users	⭐ Easy, no code	Works on all Squarespace plans. 15-minute setup.
Custom Code Injection (JS + fetch)	⭐⭐ Medium: JavaScript	Squarespace Business+. Inject JS to intercept form submits.
Squarespace Extensions (Commerce)	⭐ Easy, if extension available	Check Squarespace Extension Marketplace for WA.Expert.

Integration Methods

Step-by-step connection guides

Method 2 Code Injection Method (Business+ Plans)

Open Code Injection in Squarespace

Settings → Advanced → Code Injection → Footer. This JavaScript runs on every page of your site.

Add form intercept script

Write JavaScript that listens for Squarespace form submission events and extracts the phone number. Squarespace forms fire a native browser submit event.

Call WA.Expert API from browser

Use fetch() to POST to WA.Expert API with the phone and form data. Note: this calls the API from the visitor's browser, the API key will be visible in source code. Use a backend proxy for production.

Use a backend proxy for security

For production: instead of calling WA.Expert directly from the browser, call your own backend endpoint (Vercel/Railway serverless function) which holds the API key securely and forwards to WA.Expert.

// Squarespace Code Injection (Footer)
// WARNING: API key visible in browser source
// Use backend proxy for production

FAQ

Common questions

Can Squarespace send WhatsApp messages natively?

Squarespace has no native WhatsApp integration. The standard approach is Zapier (available on all Squarespace plans, no code needed) which connects any Squarespace event to WA.Expert. Code injection is an alternative for developers on Squarespace Business plans and above.

Does Squarespace have an API for automation?

Yes. Squarespace has a REST API (developer.squarespace.com) that provides access to forms, orders, inventory, and pages. However, the API is read-only for most endpoints and does not support webhooks (push events). You must poll the API for new data, which is less efficient than Zapier's event-based approach.

Can I send WhatsApp order confirmations for Squarespace Commerce orders?

Yes. Zapier's Squarespace trigger "New Commerce Order" fires when a new order is placed. Map the billing address phone to WA.Expert. Squarespace Commerce includes the customer's phone if they provided it at checkout, add a required phone field in your checkout settings.

What is the difference between Squarespace and Webflow for WhatsApp integration?

Webflow has a built-in Logic automation builder with HTTP Request actions. WhatsApp integration is possible without any external tools on Webflow Business plans. Squarespace requires Zapier or custom code for the same functionality. If WhatsApp automation is important for your website, Webflow provides a more integrated experience.

How do I add a phone field to Squarespace forms?

In Squarespace form editor: add a Text block to your form. Set the Field Type to "Phone" (if available) or use a regular Text field with the label "Phone / WhatsApp Number". Make it required if you need WhatsApp for all submissions.

Is the Zapier free plan sufficient for Squarespace + WhatsApp?

Zapier Free allows 5 Zaps and 100 tasks/month. If your site gets under 100 form submissions per month, the free plan works. For more volume or to use multi-step Zaps (with filters and formatters), you'll need Zapier Starter (₹1,600/month approx).

Ready to connect Squarespace to WhatsApp?

Zapier gets your Squarespace forms firing WhatsApp notifications in 15 minutes. Works on all Squarespace plans.

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