This document summarizes a presentation about email marketing campaigns using cost-per-acquisition (CPA) versus cost-per-mille (CPM) models. It notes that while CPM campaigns guarantee delivery dates, they carry more risk since payment is made upfront. CPA campaigns pose less risk since payment is only made for acquired leads, but delivery dates are not guaranteed. It recommends testing both models and consolidating marketing partners to improve performance. Mobile optimization, compliance monitoring, and managing data sources are also discussed as keys to success.