1.5 – Collect Emails on the Landing Page with Supabase Lesson

Lesson Overview

Capturing interest before a product launch can make a big difference. In this lesson, you’ll see how collecting email addresses on your landing page lets you build an early contact list for future notifications. The tutorial focuses on integrating Supabase—a hosted database solution—so you don’t have to manage servers or write complex backend code. Using Lovable as your page builder, you’ll add an input field that saves emails submitted by visitors.

This approach is especially relevant early in your project, when you might not have a full app yet but want to gather potential user contacts. Any entrepreneur launching a new service, product, or community can benefit from collecting emails. Once set up, Supabase’s admin tools let you review all the email sign-ups in one place.

Supabase’s integration with Lovable speeds up what could otherwise be a time-consuming process. Whether you’re prepping for launch, testing demand, or planning a waitlist campaign, capturing emails now will make engagement and future marketing efforts easier.

Who This Is For

If you need to start building a user list before launching a product, this lesson will help you get there quickly.

• Entrepreneurs preparing for a web product or SaaS launch
• Marketers seeking to validate early demand or run pre-launch campaigns
• Content creators building landing pages for newsletter signups
• Developers interested in simple, no-server data management
• Anyone using Lovable to create and connect landing pages
• Teams wanting a hands-off, reliable way to store user emails
  

Where This Fits in a Workflow

Email collection is usually one of the first practical steps in building out a product’s online presence. You might use this when your landing page goes live and you want to gauge early user interest, or when you launch a pre-release campaign and need a way to notify your audience.

For example, once your landing page is created in Lovable, you’ll follow this lesson to connect it to Supabase, set up the email input, and start accumulating subscriber details. Later, the collected emails can fuel email notifications about your launch, help with onboarding, or be exported for marketing campaigns. This lesson lays the foundation for many follow-up steps in product development, including activating automated emails or customer segmentation.

Technical & Workflow Benefits

Before using a tool like Supabase, collecting emails on a landing page meant handling your own backend systems, managing spreadsheets, or manually copying form submissions—often leading to errors and incomplete datasets. Supabase removes this complexity by offering a managed database you can connect to directly from a builder like Lovable.

With this lesson’s approach, you remove repetitive setup steps: the database is spun up for you, access is managed, and form integration is largely automated. You can focus on improving your landing page and user experience instead of handling server logic or database scripts. If an email is submitted, it appears in your Supabase console immediately—no extra steps needed.

This method is both faster and more reliable than manual solutions. It enables you to react quickly to sign-ups, set up email automations in future, and easily monitor your growing user base.

Practice Exercise

To reinforce this lesson, try the following exercise:

1. Set up a new Supabase project using the same steps as shown in the lesson, giving it a relevant project name (for example, the name of your startup).
2. In Lovable, update your landing page by prompting it to add an email input field and a “Notify Me” button. Connect your page to the Supabase project.
3. Submit a test email from your landing page. Open Supabase and locate the emails table—confirm that your test email appears, along with a timestamp.

**Reflection Question:**
How would your process change if you needed to collect additional information (such as user names or custom questions) along with emails? What adjustments to the database or UI would be required?

Course Context Recap

This lesson marks the point where your landing page begins interacting with real user data, moving beyond static design to genuine user engagement. Prior lessons have focused on setting up the project and building the initial UI. Here, you’ve connected your app to Supabase and enabled live sign-ups. Next, you’ll take what’s now a functional landing page and learn how to deploy it to your production domain, making it accessible to your users in real-world settings.

Keep progressing through the course to see how these building blocks work together, or revisit previous chapters if you want to review any part of the setup. There’s more to explore as you move from ideas to a working, user-ready platform.