Refer-a-friend: Auto-apply promotion codes at checkout

What is auto-apply for promotion codes?

Auto-apply allows promotion codes to be automatically included in your customers' referral links. When a friend clicks a referral link, the promotion code is passed to your website and is automatically pre-filled in the coupon input field at checkout, creating a seamless discount experience for new customers.

Requirements

To use auto-apply promotion codes, you need:

1. An active integration (Stripe, Paddle Billing, Shopify, or WooCommerce) or a custom API setup
2. At least one coupon with promotion codes assigned to customers
3. The Partnero tracking script installed on your website.

How to enable auto-apply promotion codes

Follow the two-step process to enable auto-apply promotion codes for your program.

Step 1: Enable "Include promotion codes in referral links"

1. Go to Settings in your program dashboard and scroll down to the Coupon tracking section.
2. Toggle Include promotion codes in referral links: 
3. Click Update.

When enabled, this setting automatically appends the customer's promotion code to all their referral links. For example:

• Original link: https://yoursite.com/?via=john
• With promotion code: https://yoursite.com/?via=john&coupon=JOHN20

Note: This can also be configured individually for each partner on their profile page.

Step 2: Configure coupon input field IDs

Coupon input field IDs tell Partnero where to auto-fill the promotion code on your checkout page.

1. Under Program → Coupon tracking section, find the Coupon input field IDs.
2. Click Add field ID: 
3. Enter the HTML ID of your coupon input field (e.g., discount-code).
4. Click Update. 

You can add multiple field IDs if your website has different checkout pages with different coupon field names.

Important: Make sure the field ID exactly matches your checkout form (IDs are case-sensitive).

Auto-apply with Stripe

Stripe offers several ways to accept payments. How auto-apply works depends on which Stripe product you're using:

Stripe Payment Links 

Automatic coupon application is fully supported with Stripe Payment Links.

When a visitor clicks a partner's referral link that includes a promotion code (e.g., ?coupon=JOHN20), the coupon is automatically applied at the Stripe Payment Link checkout. No additional configuration is needed; it just works.

Custom checkout page

If you have a custom checkout page (not using Stripe's hosted solutions), configure the coupon input field ID as described in Step 2, and Partnero will auto-fill the code into your form.