App developer accounts are intended for creating and managing apps, integrations, and developer test accounts. They're also where you can create and manage App Marketplace listings. However, app developer accounts and their associated test accounts aren’t connected to a standard HubSpot account. They can’t sync data or assets to or from another HubSpot account.
App developer accounts can be identified by a banner at the top of any page that says This is an app developer account. 
Get started by creating an app developer account.
Within app developer accounts, you can create developer test accounts to test apps and integrations without affecting any real HubSpot data. Developer test accounts do not mirror production accounts, but are instead free HubSpot accounts with access to a 90-day trial of many enterprise features, with the following limitations:
- Marketing Hub: you can only send marketing emails to addresses of users who you've added to your developer test account.
- CMS Hub: the number of pages you can create are subject to the following limits:
- Website pages: 25
- Blogging tools: 1 blog with up to 100 posts
- Landing pages: 25
You can create up to 10 test accounts per developer account. This type of account cannot sync data with other accounts, and they can't be connected to a standard HubSpot account. Test accounts can be identified by a banner at the top of the page, which includes how many days are left before it expires.
Below, learn more about creating and managing test accounts.
To create a developer test account:
- In the top navigation bar of your app developer account, click Testing.
- In the upper right, click Create an app test account.
- Enter an account name, then click Create.
To access and manage your developer test accounts:
- In the top navigation bar of your app developer account, click Testing.
- Hover over the account you want to manage, then select an action:
- To delete the account, click Delete.
- To copy the account ID, renew the account, or rename it, click the More dropdown menu.
Renew a developer test account
Developer test accounts will expire after 90 days if no API calls are made to the account. You can either manually renew the account from the Testing page in HubSpot, or by making an API call to the account. Keep the following in mind when attempting to renew the account via API call:
- This only applies to API requests made using OAuth tokens generated from an application in the same developer account as the test account you want to renew.
- Renewals must be made no more than 30 days before the test account’s expiration date.
You can create a standard sandbox account that provides a safe and secure environment where you can test new workflows, integrations, website pages, and other important changes without impacting anything in your standard account. They copy the structure of your standard account, and are available to customers with any Enterprise plan. To learn how to create a standard sandbox account, check out this Knowledge Base article.
These accounts can be identified by a yellow banner at the top of the page that includes the label: You're in [name of sandbox], which is a standard sandbox account. The banner will also include a link back to your production account for easy switching.
Marketplace Provider accounts are intended for creating and managing Asset Marketplace listings and transactions.
A Marketplace Provider account can be identified by an Asset Marketplace item in the top navigation menu.
