> ## Documentation Index
> Fetch the complete documentation index at: https://polar.sh/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Custom Benefit

> Create your own Custom benefit

You can add a simple, custom benefit, which allows you to attach a note to paying customers.

## **Custom Notes**

Secret message only customers can see, e.g [Cal.com](http://Cal.com) link, private email for support etc.

For custom integrations you can also distinguish benefits granted to customers to offer even more bespoke user benefits.

## Sharing links and instructions after purchase

Because the **Private note** supports Markdown, a Custom benefit is the simplest way to deliver post-purchase content without writing any code:

* A private link (Calendly, Notion, …)
* Onboarding instructions or a welcome message
* A coupon code for a partner service

Set the **Description** to the title customers will see (e.g. *"Your onboarding link"*), put the link or instructions in **Private note**, and attach the benefit to a product. The rendered Markdown appears on the checkout success page, in the purchase confirmation email, and in the [Customer Portal](/features/customer-portal).

<Note>
  Previously, we recommended using a Custom benefit without a note as a way to
  grant access to software or SaaS features — decoupling entitlements from
  checking directly on products. We now recommend the
  [Feature Flag](/features/benefits/feature-flags) benefit for this purpose, as
  it's purpose-built for feature gating and supports key-value metadata.
</Note>