Each PayPal account has a unique merchant account ID. When you create a payment button, you can choose to display your merchant account ID instead of your primary email address. This way your email address won't be visible to spammers.

Here’s how to locate your secure merchant ID:

1. Go to your Account Settings.
2. You can find your Merchant ID under "Account options."

Here are 2 ways to apply your merchant ID in a payment button:

• Copy your ID and paste it into your PayPal button code.
• Open your payment button in the saved button list and choose your merchant account ID in the editing page.