Comprehensive Contact Scraping Tool

I need a robust, automated solution that collects contact details—specifically emails, phone numbers, and postal addresses—from LinkedIn, company websites, and general online directories. The tool should:

• Accept a list of target companies or profile URLs and crawl those sources intelligently
• Detect, parse, and export the requested contact fields to CSV or Excel in a clean, column-mapped format
• Handle pagination, dynamic content, and basic anti-bot measures (e.g., rotating user agents or proxy support) without breaking platform rules
• Allow me to adjust scraping depth or add new domains later through a simple configuration file or UI

Please deliver the full source code, brief setup instructions, and a quick demo run on a small sample list so I can verify accuracy.