For the complete documentation index, see llms.txt. This page is also available as Markdown.

PayPal Classic (Legacy API)

This is the traditional PayPal payment flow, suitable if your account does not have access to the Payouts API.

Prerequisites

Before setting up PayPal Classic, make sure you have:

  • A PayPal Business account

  • Access to API credentials (Username, Password, and Signature) from your PayPal account

Step 1 — Enable PayPal Classic in Yuko

  1. In your Yuko dashboard, go to Payouts → Payment Methods

  2. Find PayPal Classic (Legacy API) and toggle it on


Step 2 — Retrieve Your PayPal API Credentials

  1. Log in to your PayPal account at paypal.com

  2. Go to Account Settings → API Access

  3. Click Continue without NVP/SOAP integration

  4. Copy your API Username, API Password, and Signature


Step 3 — Add API Credentials in Yuko

  1. Go back to Yuko under Payouts → Payment Methods → PayPal Classic

  2. Paste your API Username, API Password, and Signature

  3. Click Save


Step 4 — Configure IPN Webhook

Instant Payment Notifications (IPN) allow PayPal to notify Yuko whenever a payment is made, keeping your payout records in sync.

  1. In Yuko, go to Payouts → Payment Methods → PayPal Classic

  2. Copy the IPN Webhook URL shown there

  3. Log in to PayPal and go to Account Settings → Notifications → Instant Payment Notifications

  4. Click Choose IPN Settings

  5. Paste the Yuko IPN URL into the Notification URL field

  6. Select Receive IPN messages (Enabled)

  7. Click Save

Yuko will verify the credentials and activate PayPal Classic as a payout method.


How It Works After Setup

Once connected:

  • Affiliate payouts are processed directly through your PayPal Business account using the Classic API

  • Affiliates receive payments to their registered PayPal email address


Troubleshooting

Invalid API credentials error Double-check that you copied the API Username, Password, and Signature exactly from PayPal.

IPN not receiving notifications Confirm the IPN webhook URL from Yuko is pasted correctly in PayPal and that IPN messages are set to Enabled.

Affiliate didn't receive payment Confirm the affiliate's payout email in Yuko matches their active PayPal account email.


Note: PayPal Classic is a legacy integration. If your PayPal account supports the Payouts API, we recommend using PayPal (Payout API) instead for a more reliable and automated experience.

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