How do I replace my email address in a non-hosted, unencrypted PayPal button with my Merchant Account ID?

Here's how:

  1. Log in to your PayPal account.
  2. Click Profile > Profile and settings..
  3. Ensure you are on the My business info option in left column.
  4. Copy your Merchant Account ID.
  5. Open the HTML code of the PayPal button in your website and replace your PayPal account email address with your Merchant Account ID.