Add-ons allow you to easily add functionality to your app – from exception tracking and notification to recurring billing and more. Add-ons are built and maintained by external vendors, not by Heroku (with a few exceptions).

Articles

• Managing Add-ons
• The Add-on Provider Program

Frequently Asked Questions

Why do I have to provide my billing details to use add-ons?

Some features, most notably outgoing email and custom domains, carry a potential for abuse. As a business, we need to be able reliably identify and contact our users in the event of an issue. We have found that a credit card on file provides the most reliable way of obtaining verified contact information.