How do I send confirmation emails to an email address different than the PayPal email address a customer uses?

New Infusionsoft user here. Some of my customers use a primary email address that is different from their PayPal email address. However, when they make a purchase through the order form, if they pay with PayPal, the confirmation email is sent to the email address associated with PayPal. Is the best solution for this matter to create a Web Form (where the customer can input the primary email address) that forwards to the Order Form? Then, with tags/trigger tags, identify the customer in my database and merge any PayPal email addresses with the contact’s primary email address in Infusionsoft?

Thank you in advance for your help.