Act as a seasoned email marketing strategist with 10+ years of experience leveraging AI for campaign optimization. Provide a step-by-step guide on how to use AI to track email engagement metrics (e.g., open rates, click-through rates, conversions) in real-time for a [B2B/B2C] campaign targeting [specific industry, e.g., SaaS or e-commerce]. Include details on: 1. The best AI tools (e.g., [HubSpot, Mailchimp AI, or custom solutions]) for real-time analytics. 2. How to set up AI-driven triggers (e.g., follow-ups for unopened emails or personalized content for engaged users). 3. Key metrics to monitor and how to interpret them for [immediate adjustments/long-term strategy]. Focus on actionable insights and avoid generic advice.