Async Python CLI pipeline combining zero-cost SMTP/MX verification with LLM-powered context personalization.

What’s included:

• Async DNS/MX lookup and direct SMTP handshake verification to eliminate bounces without third-party API fees
• Deterministic company website scraping with HTML-to-Markdown parsing and metadata sanitization
• Structured LLM hook generation using Instructor and Pydantic schemas (compatible with OpenAI, Anthropic, or local Ollama)
• Token-efficient caching layer with SQLite and rate-limited asynchronous worker queues for high-throughput batching