/lovable-integrations

Lovable and Campaign Monitor integration: Step-by-Step Guide 2025

Learn how to seamlessly integrate Lovable with Campaign Monitor using our step-by-step guide to boost your email marketing strategy and efficiency.

Matt Graham, CEO of Rapid Developers

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How to integrate Lovable with Campaign Monitor?

 

Setting Up Campaign Monitor Integration in Lovable

 
  • Create a file named CampaignMonitorService.ts in your project's src/services directory. This file will contain the code to interact with Campaign Monitor's API.

export interface Subscriber {
  email: string;
  name?: string;
}

export class CampaignMonitorService {
  private apiKey: string;
  private listId: string;
  private baseUrl: string;

  constructor(apiKey: string, listId: string) {
    this.apiKey = apiKey;
    this.listId = listId;
    // Base URL for Campaign Monitor API v3.2
    this.baseUrl = 'https://api.createsend.com/api/v3.2';
  }

  public async addSubscriber(subscriber: Subscriber): Promise {
    const url = ${this.baseUrl}/subscribers/${this.listId}.json;
    const body = {
      EmailAddress: subscriber.email,
      Name: subscriber.name || '',
      Resubscribe: true // Ensures that existing subscribers are updated
    };

    // Authorization using Basic Auth (Campaign Monitor requires an API key)
    // The API key is encoded with a dummy password parameter ':x'
    const response = await fetch(url, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        'Authorization': 'Basic ' + btoa(this.apiKey + ':x'),
      },
      body: JSON.stringify(body),
    });

    if (!response.ok) {
      const errorData = await response.text();
      throw new Error(Error adding subscriber: ${errorData});
    }
    return response.json();
  }
}
  • Replace YOURCAMPAIGNMONITORAPIKEY and YOURCAMPAIGNMONITORLISTID with your actual Campaign Monitor credentials.

 

Creating a Subscription Module

 
  • Create a file named subscribe.ts in your project's src directory. This file will handle user subscriptions by using the service you just created.

import { CampaignMonitorService, Subscriber } from './services/CampaignMonitorService';

// Replace with your actual Campaign Monitor API key and list ID
const apiKey = 'YOURCAMPAIGNMONITORAPIKEY';
const listId = 'YOURCAMPAIGNMONITORLISTID';

const campaignMonitor = new CampaignMonitorService(apiKey, listId);

// Function to subscribe a user to your Campaign Monitor list
export async function subscribeUser(email: string, name?: string) {
  const subscriber: Subscriber = { email, name };
  try {
    const result = await campaignMonitor.addSubscriber(subscriber);
    console.log('Subscriber added successfully:', result);
  } catch (error) {
    console.error('Failed to add subscriber:', error);
  }
}

 

Integrating Subscription into Your Lovable Project

 
  • Locate the file where your subscription form or user registration logic is defined.
  • Import the subscribeUser function into that file.
  • Add an event listener on the subscription form to call the subscribeUser function when a user submits their email and name.

import { subscribeUser } from './subscribe';

// Assuming your subscription form has the ID "subscription-form"
const form = document.getElementById('subscription-form');
if (form) {
  form.addEventListener('submit', async (event) => {
    event.preventDefault();

    // Assuming input fields with IDs "email" and "name"
    const emailInput = document.getElementById('email') as HTMLInputElement;
    const nameInput = document.getElementById('name') as HTMLInputElement;
    const email = emailInput.value;
    const name = nameInput.value;

    await subscribeUser(email, name);
  });
}

 

Installing Dependencies Without a Terminal

 
  • Since Lovable does not have a terminal, use browser-native features available in modern browsers. The code above uses the fetch API, which is supported in most browsers.
  • If you need to support older browsers, consider adding a polyfill by inserting the following script tag into your index.html within the <head> section:

<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/fetch.umd.js"></script>

 

Testing Your Campaign Monitor Integration

 
  • Open the page containing your subscription form in your browser.
  • Fill in the form with an email address and name, then submit.
  • Check your browser console to see the successful subscription message or any error messages that help with debugging.

 

Final Notes

 
  • Ensure that you secure your API keys appropriately. Do not expose sensitive credentials in client-side code if your project is public.
  • For production environments, consider moving API calls to a server-side function or using environment variables with secure storage.

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