The Challenge

Modern professionals need Superhuman-level email productivity without the $30/month price tag or data privacy concerns. We set out to build an alternative that levelled up and innovated one of our most precious communications channel.

What We Built

  • Chrome extension with full Gmail integration and keyboard-first design
  • Two-tier security system — local heuristics + AI-powered deep scan for phishing and scam detection
  • Bill detection engine — automatically finds bills, tracks spending, and suggests savings
  • Multi-account support with instant switching and per-account caching
  • AI composition supporting OpenAI, Anthropic, and custom endpoints
  • Read receipt tracking with detailed analytics
  • Keyboard shortcuts to supercharge productivity

Technical Highlights

  • Chrome extension architecture
  • Gmail API with incremental sync via History API
  • Deployed backend for AI proxy and payments
  • Secure AI sentiment assistant
  • Subscription management

Results

  • 67% cost reduction vs. Superhuman pricing
  • Sub-100ms account switching with intelligent caching
  • Privacy-first architecture — API keys stored locally, no data collection