Quartz.

Quartz

Quartz is an AI-native email client designed for Mac users who value focus, privacy, and authentic communication. By running entirely on your device with local AI processing, Quartz eliminates the noise of traditional inboxes while ensuring your emails never leave your machine. It learns your unique writing style to generate replies that genuinely sound like you — not generic AI output.

Product Highlights

• Local AI Processing: All inbox sorting, categorization, and reply drafting happen directly on your Mac using Apple Silicon — your emails are never uploaded to external servers or shared with AI providers.

• Smart Importance Filtering: Auto-categorizes messages by importance based on your preferences and learned behavior, giving priority emails the space they deserve while collapsing distractions into FYI, Icebox, and Noise sections.

• Personalized Voice Matching: Learns your writing cadence, phrasing, and relationship context with each sender to generate warm, authentic drafts that mirror your natural communication style.

• Enterprise-Grade Privacy: Features end-to-end encryption with keys held only by you and holds CASA Tier 2 certification from Google's independent Cloud Application Security Assessment.

• Distraction-Free Design: Presents important messages with AI-generated summaries in full view, while keeping inbox items scannable and hiding low-priority clutter from your immediate attention.

Use Cases

• Executive Communication: Busy professionals who receive hundreds of daily emails can quickly surface what matters, draft thoughtful responses in their own voice, and maintain inbox zero without sacrificing personal touch.

• Privacy-Conscious Users: Individuals and organizations handling sensitive information who require complete data sovereignty and zero third-party access to their email content.

• Deep Work Practitioners: Knowledge workers seeking to minimize context switching and protect focused time by reducing email-induced distraction through intelligent noise filtering.

• Authentic Relationship Building: Sales professionals, founders, and networkers who need to maintain warm, personalized correspondence at scale without sounding automated or impersonal.

Target Audience

Quartz serves Mac-using Gmail subscribers who prioritize productivity through intentional design — particularly privacy-minded professionals, writers, executives, and anyone frustrated by algorithmic feeds, cluttered inboxes, and generic AI communication tools that strip away human authenticity.