MindVault
Private search engine for your entire digital life - find any email, doc, chat, or bookmark in seconds with encrypted personal indexing
The Problem
Knowledge workers spend 2.5 hours daily searching for information buried across 10+ disconnected apps: emails in Gmail, files in Drive/Dropbox, messages in Slack/Teams, bookmarks in browser, notes in Notion, receipts in inbox. Generic search in each app misses context. 'Where did I save that client proposal from March?' takes 15 minutes of hunting. Enterprise search tools cost $20-50/user but send your data to third parties. No truly private personal search exists.
The Solution
Encrypted personal search engine that connects to all your accounts once, continuously indexes everything locally or in your private encrypted cloud vault, builds a semantic knowledge graph of your digital life, and lets you search across everything with natural language ('find the email where Sarah mentioned the Q3 budget' or 'show me all docs about the redesign project'). Zero-knowledge encryption means even the service can't read your data. Install once, search forever.
MVP Features
Core integrations: Gmail, Google Drive, Slack, browser history/bookmarks
Local desktop app for private indexing (macOS/Windows/Linux)
Full-text search across all connected sources with instant results
Natural language query understanding ('emails from last month about hiring')
Unified search results showing source (email vs doc vs chat) with previews
End-to-end encryption for all indexed data
Browser extension for quick search hotkey (Cmd+K anywhere)
Smart filters by date, source, person, file type
Keyword highlighting in search results
Recent searches and search history
Privacy dashboard showing what's indexed and data retention settings
Incremental sync (only index new content, not full re-index)
Offline search capability when internet is unavailable
Export search results to markdown/CSV
Optional cloud backup with zero-knowledge encryption
Monetization
Freemium SaaS: Free tier indexes 5K items across 3 integrations (Gmail, Drive, bookmarks). Pro at $12/month for unlimited items and 10 integrations. Premium at $25/month adds AI-powered summaries, advanced filters, team knowledge sharing (encrypted), and priority sync. Lifetime deal at $299 one-time payment for power users concerned about long-term privacy. Target 5,000 users at $15 average = $900K ARR Year 2 (viral growth from privacy-conscious users).