What is my PayPal username?
Your PayPal username is the email address you used to register for your PayPal account. If you use more than one email address and don't remember the specific one you used, click Problem with login above the Log In button on the PayPal homepage (www.paypal.com.au) and follow the prompts to recover your username.
Once you log in, you can also add and confirm any other email addresses you use. To do this, click Settings at the top right corner of the page. PayPal does not use account numbers or IDs to identify users.