How to Integrate Mailchimp with Squarespace: The Complete 2025 Guide (and a More Powerful Alternative)

You’re here because you’re a savvy builder. You've chosen two of the most respected, best-in-class tools to create your online presence. You’ve harnessed the elegant design and powerful simplicity of Squarespace to build a beautiful website, and now you want to connect it to the email marketing prowess of Mailchimp.

Searching for how to integrate Mailchimp with Squarespace is the logical next step. You're ready to move beyond just having a website and start building an audience, capturing leads, and creating a direct line of communication with your future customers. This is a smart, crucial move, and you're in exactly the right place.

This guide is designed to be your complete resource. We will start by giving you the clear, step-by-step technical instructions you're looking for to make this integration work. This is the foundation, and we will build it together.

But then, we're going to take the next logical step in our thinking. We'll explore the hidden limitations and frustrations that can arise from this "bolted-on" approach. Finally, we will build the case for a superior, seamlessly integrated system that provides more power, more flexibility, and better value, allowing you to build the truly automated business you envision.

Part 1: The Step-by-Step Guide to Connecting Mailchimp and Squarespace

Let's start with the task at hand. You want to connect these two platforms so that when someone fills out a form on your Squarespace site, they are automatically added to your Mailchimp audience. There are two primary methods to achieve this.

Method 1: Using Squarespace's Built-in Newsletter Block (The Simple Way)

This is the most direct method and is perfect for a simple newsletter sign-up in your website's footer or on a dedicated page.

1. Get Your Mailchimp API Key and Audience ID:

   • Log in to your Mailchimp account. Click on your profile icon at the bottom left, then "Account & billing."

   • Go to the "Extras" dropdown menu and select "API keys."

   • If you don't have one, click "Create A Key." Copy this long string of letters and numbers.

   • Next, navigate to "Audience" > "Audience dashboard." Click "Manage Audience" on the right and select "Settings." At the bottom of the settings page, you'll find your unique "Audience ID." Copy this as well.

   
   

2. Connect to Squarespace:

   • Log in to your Squarespace site. In the main menu, go to "Settings," then "Email Signup Storage" (or a similar path depending on your Squarespace version).

   • Click "Connect Another Service" and select "Mailchimp."

   • A window will pop up asking for your API Key and Audience ID. Paste the information you copied in Step 1. Squarespace will verify the connection.

     
     

3. Add the Newsletter Block to Your Site:

   • Go to any page where you want to add a sign-up form and click "Edit."

   • Click an insert point ("+") and select the "Newsletter" block.

   • In the block's settings, under the "Storage" tab, select your Mailchimp account from the list.

   • Customize the form's title, description, and button text. Click "Apply" and save the page.

   
   

You've now connected a basic form. When a user signs up, they will be added to the Mailchimp list you designated.

Method 2: Using a Code Block to Embed a Mailchimp Form (The Advanced Way)

This method gives you more control over the form's design and fields, making it ideal if you need to collect more than just an email address.

1. Create a Form in Mailchimp:

   • In your Mailchimp account, go to "Audience" and select "Signup forms."

   • Choose "Embedded forms" and design your form. You can add fields, customize colors, and adjust the layout.

     
     

2. Get the Embed Code:

   • Once you're happy with your form's design, Mailchimp will generate a block of HTML code. Copy this entire code block.

     
     

3. Embed the Code in Squarespace:

   • On your Squarespace site, edit the page where you want the form to appear.

   • Click an insert point and select the "Code" block.

   • Paste the HTML code from Mailchimp into the code block. Make sure it's set to display as HTML.

   • Click "Apply" and save the page. Your custom Mailchimp form will now appear on your site.

   
   

If you run into issues, common search terms like "Squarespace Mailchimp integration not working" often lead to solutions related to incorrect API keys or needing to reconnect the service.

You've now successfully built the bridge between your two islands. But now that the bridge is built, we have to ask the next logical question.

Part 2: The Strategist's Dilemma - The Hidden Limits of a 'Bolted-On' System

You've achieved your initial goal. But as a strategic business owner, you will quickly start to feel the friction of this "bolted-on" approach. This is the pivotal moment where you move from thinking like a technician to thinking like a business architect.

The problems with a disconnected system are subtle but significant:

• Data Lag and Silos: The data sync between Squarespace and Mailchimp isn't always instant. More importantly, the data is fundamentally siloed. Mailchimp has no idea what pages a subscriber visited on your Squarespace site, and Squarespace has no idea how engaged that user is with your emails.

• No Behavioral Automation: This is the biggest limitation. You cannot trigger a marketing automation based on website behavior. Imagine the power of a workflow that says, "IF a subscriber visits my pricing page three times but doesn't buy, THEN send them a case study and a special offer." With a separate Squarespace site, this is impossible.

• Inconsistent User Experience: The pop-up forms, landing pages, and email designs from Mailchimp can be difficult to perfectly match with your carefully curated Squarespace brand aesthetic, creating a slightly disjointed feel for your visitors.

• Managing (and Paying for) Two Platforms: You have two separate logins, two separate analytics dashboards, and two separate bills. This creates inefficiency and can often be more expensive than a single, unified solution. When comparing Squarespace Email Campaigns vs Mailchimp, you're really comparing two separate, limited worlds.

You built a bridge, but you're still spending your time running back and forth between two different islands.

Part 3: The Superior Alternative - The Power of a Natively Integrated Ecosystem

Now that we have established the inevitable frustrations of a disconnected system, let's explore the logical solution. The superior choice is a single platform where your website, landing pages, pop-up forms, email marketing, and automation are all part of the same native ecosystem.

This is where an all-in-one growth platform like GetResponse becomes the clear strategic winner for the ambitious business owner who values both design and power.

Let's use the contrast principle to see how a unified platform solves every problem we just identified:

1. A Powerful, Integrated Website Builder

• Instead of building your site on one platform and connecting your email marketing from another, GetResponse includes an AI-powered Website Builder. You can create a stunning, professional website that is just as beautiful as any Squarespace site, but with a crucial difference: it is natively connected to your entire marketing engine from day one.

2. Deeply Integrated Forms and Pop-ups

• When you add a form or a pop-up to your GetResponse website, the data sync is instant and perfect because it's the same system. More importantly, you can trigger powerful automations based on which form a user submitted, something that's impossible with the Squarespace/Mailchimp integration.

3. True Behavioral Website Tracking

• This is the game-changer. With GetResponse, you can track which pages your subscribers visit on your website. This unlocks a new level of automation. You can create workflows like:

  • "IF a contact visits a blog post about 'Beginner Tips,' THEN tag them as a beginner and send them the beginner's email series."

  • "IF a contact visits the sales page for 'Product X' but doesn't purchase, THEN send them the 'Product X Abandoned Browse' sequence."

4. A Complete Growth Suite in One Place

• When you're looking for alternatives to Mailchimp for Squarespace, you realize you don't just need email. With GetResponse, you also get a complete Conversion Funnel builder to sell your products and a built-in Webinar Platform to host live events, all for a single, predictable price.

A Detailed Feature Comparison: The Two-Platform vs. The All-in-One Approach

Feature	The Squarespace + Mailchimp Approach	The GetResponse All-in-One Approach
Website Builder	Best-in-class (Squarespace)	Powerful AI Website Builder
Email Marketing	Best-in-class (Mailchimp)	Powerful Email Marketing Suite
Integration	Requires 3rd-party connection, data lags	Native, instant, and seamless
Behavioral Automation	Not possible	Yes, with website visitor tracking
Conversion Funnels	No	Yes, built-in feature
Webinars	No	Yes, built-in feature
Management	Two separate platforms, logins, and bills	One unified platform, login, and bill

From Connecting Tools to Building a Seamless Business

You came here looking for a technical solution to a simple problem. But as a strategic business architect, you now see the bigger picture. The goal isn't just to connect two tools; it's to create a seamless, intelligent, and automated experience for your customers and for yourself.

You chose Squarespace because you value beautiful design and a seamless user experience. The next logical step is to demand that same level of seamless integration for your marketing and sales system.

While integrating Mailchimp with Squarespace is a good first step, a unified platform like GetResponse is the demonstrably superior long-term solution. It provides the design elegance you love, combined with a deeply integrated suite of marketing and sales tools that a "bolted-on" system can never match. You are no longer just connecting islands; you are building a continent.