The 5-step document outlines a process for a successful digital marketing campaign: 1) Define the target audience through demographics like age and income. 2) Develop a sustainable contact list through existing databases, events, or paid external lists. 3) Select a digital channel like email marketing providers to send the campaign. 4) Craft the campaign email with an engaging subject line and creative design. 5) Test the email, send it to the contact list, and analyze the results through analytics.