Categorize Emails

Goal: Categorize each email into one of four categories: Account Notifications, Marketing, Human, or Urgent | Inputs: List of emails from Gmail, each with sender, subject line, body snippet, and metadata | Outputs: A structured list of emails grouped by category: Account Notifications (automated system/account alerts), Marketing (promotional or newsletter content), Human (personal emails from real people that are not urgent), Urgent (time-sensitive emails requiring a response from a real person). Include sender name, subject, and a brief reason for categorization for each email. | Constraints: Use these rules: Urgent = real person, time-sensitive, requires a reply (e.g., deadline, question, issue, important request). Human = real person but not urgent. Marketing = newsletters, promotions, product announcements. Account Notifications = password resets, billing alerts, app/service notifications. If in doubt between Urgent and Human, prefer Urgent to avoid missing important messages. | Success criteria: Every email is assigned to exactly one category. The Urgent list is accurate and contains only emails that genuinely need a timely response.