Email.
Front of the Pack’s (FOTP) main product is a whole-body dog supplement called The One. They have a “supplement quiz” on their website for prospective customers to share information about their dog(s) to ensure FOTP provides the right dosage.
What happens if these prospects don’t place an order? FOTP sends a series of “welcome” emails aimed at converting them to customers. (There are two versions for each email, testing copy and/or design tweaks.)