Using Customers.ai, they not only saw a 28% decrease in Facebook CPA, lowering the average cost from $70 to $50, but they also increased their retargeting audience as a whole by 58,000 new people in just one week!

Facebook wasn't the only success story here. Harvest Hosts was able to add over 74,000 new emails to their list and add $125,000 in annual recurring revenue.