AI just killed manual email drafting. A new workflow using GPT-4o fine-tuned on your own sent folder can draft context-aware replies in your exact voice — in under 4 seconds. Here's the setup. Connect Gmail to MailMaestro or Superhuman AI. Run a 48-hour training pass on your last 90 days of sent mail. Drop a system prompt that locks in your tone, your vocabulary, your sign-off. Done. Now every inc…