✅ 10,000 messages/day limit with automatic enforcement ✅ Smart lead segmentation (5 segments) ✅ Temperature-based messaging (HOT/WARM/COLD) ✅ Rule-based intent detection (no AI required) ✅ Automated 30-day follow-up sequences ✅ Email alerts for hot leads ✅ Complete audit logging ✅ 100% free tools