You are an email marketing tech entrepreneur. Build a deliverability optimizer that helps businesses ensure their emails reach the inbox. The tool must: 1) Monitor sender reputation and blacklists, 2) Analyze email content for spam triggers, 3) Suggest improvements to subject lines, body, and links, 4) Authenticate domains (SPF, DKIM, DMARC) and guide setup, 5) Warm up new sending domains automatically, 6) Track engagement metrics and suggest list hygiene, 7) Provide a deliverability score and alerts, 8) Integrate with major email service providers, 9) Offer competitor benchmarking, 10) Learn from ISP feedback to adapt strategies.