Question: I'm looking for a document management system that allows me to share files with customizable permissions and track engagement metrics.

If you're looking for a document management system that lets you share files with permission controls you can set yourself and track engagement metrics, Dropbox is a good option. It's got protected file storage with version history, password protection and watermarking. Dropbox also offers links you can track for engagement and permission settings, PDF editing and video tools for feedback and approval. And it's got automated workflows with eSignature templates and real-time document analytics.

Another option is Bit.ai, an AI-infused document collaboration tool that lets you create, edit, and share documents with advanced design abilities and powerful search. It's got features like interactive living documents, AI-boosted writing and trackable links to monitor engagement. Bit.ai also has tracking abilities to give you real-time visibility into how people are using your documents.

If you're looking for a more powerful tool, Box is a collaboration and content management platform with more advanced security controls and intelligent threat detection. It's got features like native e-signatures, streamlined workflow automation and integration with more than 1,500 popular apps. Box also offers AI-powered insights to help teams work more effectively and has a variety of pricing tiers for businesses of all sizes.

Last, Egnyte is a cloud-based system for managing, securing and governing digital content with AI capabilities. It's got options for sensitive content classification, automated workflows and insider risk management. Egnyte integrates with tools like Microsoft and Google, and has industry-specific options, so it's a good option for managing and securing your documents.