HubSpot Legacy Public App Sunset: Impact on E-commerce & RevOps

Hey ESHOPMAN community! We often talk about leveraging HubSpot for e-commerce success, from managing your CRM to automating sales and marketing. But what about when you need something a little more custom? Something that bridges a unique gap for your store or streamlines a very specific RevOps workflow?

That’s where HubSpot’s developer platform comes in, allowing you to build custom apps and integrations. Recently, an important announcement surfaced in the HubSpot Community forums that’s critical for anyone currently developing, or planning to develop, public apps for their HubSpot portal or the Marketplace. It’s all about the sunsetting of legacy public app creation.

Timeline illustrating the sunset dates for HubSpot legacy public app creation

The Big Shift: Legacy Public App Creation is Changing

The original poster, a representative from HubSpot, shared a heads-up that, beginning May 26, 2026, the way new public apps are created is undergoing a significant change. Specifically, the ability to create new legacy public apps directly through the Developer Platform UI will be permanently disabled. Instead, new public app development will need to utilize the more modern, Projects-based app platform.

Now, before you panic, let's break down what this means for you, especially if you’re running an e-commerce operation or managing RevOps within HubSpot:

New Apps Only: This change primarily affects the creation of new public apps.
Existing Apps are Safe (for now): If you already have existing legacy public apps powering parts of your e-commerce store or RevOps stack, don't worry! They will continue to function as they are. HubSpot has a separate migration initiative planned for existing apps, which will come with its own timeline and tooling.
Private Apps Unaffected: Legacy private apps are also not affected by this update at this time.

Key Dates to Mark on Your Calendar

The rollout of this change is staggered based on your HubSpot account's creation date:

May 26, 2026: For new HubSpot accounts (created on or after this date), the ability to create legacy public apps will be disabled immediately.
June 23, 2026: For existing HubSpot accounts (created before May 26, 2026), legacy public app creation will be disabled.

It's crucial to understand that these dates specifically refer to the creation of new legacy public apps. Your existing apps will continue to operate.

Why the Shift to Projects-Based Apps?

HubSpot’s move to a Projects-based app platform isn't just a change for change's sake; it's an evolution designed to empower developers with more robust, modern tools and practices. This new platform supports:

CLI-based Workflows: Streamlined command-line interface tools for more efficient development.
UI Extensions: Deeper integration and customization possibilities within the HubSpot UI itself.
App Cards: Enhanced ways to display and interact with app data directly within HubSpot records.
Dedicated Deployment Tooling: More reliable and automated processes for deploying your applications.

For ESHOPMAN users, this means that future custom integrations and apps built on HubSpot's platform will be more powerful, more seamlessly integrated, and potentially easier to maintain. This ultimately translates to a more agile and effective all in one ecommerce software solution for your business, whether you're enhancing your storefront, automating complex RevOps sequences, or integrating with third-party services.

Consider a scenario where you want to create a custom dashboard within HubSpot that pulls real-time order data from your ESHOPMAN storefront, combined with customer service tickets and marketing campaign performance. The Projects-based platform, with its UI extensions and modern tooling, makes such intricate, data-rich customizations more achievable and stable.

What This Means for ESHOPMAN Users and HubSpot Developers

If you're an ESHOPMAN user who relies on custom public apps or plans to build one, here’s what you need to know and do:

1. For New Public App Development

If you are planning to build a new public app for your HubSpot portal or to list on the HubSpot App Marketplace, you should begin using the Projects-based platform immediately. This ensures your development efforts align with HubSpot's future direction and leverage the latest tools.

HubSpot recommends setting up your development environment using the HubSpot CLI and Projects documentation. This documentation is your go-to resource for getting started.

2. For Existing Legacy Public Apps

As mentioned, existing legacy public apps will continue to function without interruption. However, HubSpot has indicated a separate migration initiative is coming. While no immediate action is required, it's wise to stay informed about future announcements regarding migration paths and tooling. ESHOPMAN will keep a close eye on these updates to ensure our community has the latest information.

3. For Legacy Private Apps

These remain unaffected by this particular sunset. You can continue to create and manage legacy private apps as before.

Actionable Steps to Get Ready:

Review Documentation: Familiarize yourself with the Projects-based app developer documentation.
Explore CLI: If you're new to command-line tools, take some time to understand the HubSpot CLI.
Plan Ahead: For any upcoming custom public app projects, factor in the use of the Projects-based platform from the outset.
Stay Connected: Keep an eye on the HubSpot Developer Changelog and community forums for further updates, especially concerning the migration of existing legacy public apps.

This evolution of HubSpot's developer platform is a positive step towards a more robust and scalable ecosystem. For ESHOPMAN users, it means even greater potential to customize and extend your e-commerce capabilities within the HubSpot environment, ensuring your storefront and RevOps workflows are always at the cutting edge.

Got questions or concerns? The HubSpot Developer Community Forum is an excellent resource for peer-to-peer discussions and official guidance. As always, ESHOPMAN is here to help you navigate these changes and maximize your HubSpot investment.