The reason for outsourcing referral marketing is to overcome some of these challenges. A good referral partner will have deep expertise and their team will work with you to make it resonate for your customers. They will have customisable solutions that you can get live quickly. They’ll also have a robust testing and segmentation platform so that you can AB test by cohort enabling you to test every component of a programme, including offers, whilst ensuring consistency of experience for customers and friends who have already seen an offer.