The document provides tips for using email marketing to survive an economic downturn. It recommends focusing on 6 key areas: defending your email budget, expanding subscriber lists, nurturing loyal customers, optimizing email frequency, automating revenue-generating emails, and testing programs. Specific tactics include acquiring subscribers from other channels, segmenting lists, sending triggered emails, and leveraging transactional messages. Testing is important to identify top-performing programs and continual improvement. Personalized, targeted emails are more effective than batch-and-blast approaches.