Resend Receipt supports retrieving customer purchases by the following information:
License Key (requires Software Licensing)
When logged out of their account, visitors can be presented with a form to enter the necessary information to have their receipt resent to the email address they used at the time purchase.
Integrates directly with the Purchase History shortcode in Easy Digital Downloads
Optionally, site owners can also receive email notifications when a customer requests a receipt be resent.
Built-in rate limiting, to prevent continually submitting the same request over and over.
Supports enabling on a per-product basis.