Quartz
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What is Quartz?
Quartz is an AI-native email client for Mac and iOS that works on top of Gmail to help users focus on what matters. It auto-categorizes every message by importance—defined by the user and learned over time—so important mail gets more visual space while FYI, Icebox, and Noise emails collapse out of the way. This importance-based sorting keeps the inbox scannable and reduces distractions from noisy emails.
The tool features on-device AI that drafts replies in the user's own voice. Users give Quartz a few bullet points, and it learns their writing style, phrasing, cadence, warmth, and relationship with the sender to produce drafts that sound authentic rather than using generic LLM tone. All classification and drafting runs locally on Apple Silicon Macs, ensuring email content never leaves the device.
Privacy is Quartz's core differentiator. Mail is end-to-end encrypted with keys only the user holds, and there are no Quartz servers reading the inbox because the company has none. The tool is CASA Tier 2 certified under Google's Cloud Application Security Assessment and independently audited. Quartz is currently in public beta and free for beta users who download the app and connect their Gmail account.
Quartz pricing
Pricing model: Freemium
Quartz is free for beta users during public beta. Users download the app and connect their Gmail account to start using it. The website does not publish long-term pricing details for paid plans after the beta ends. The tool currently has no pricing model announced beyond the free beta access.
Quartz pros
- Auto-categorizes emails by importance defined by user
- Learns user preferences over time for better sorting
- Important messages get more visual room in inbox
- FYI, Icebox, and Noise emails collapse out of way
- Keeps inbox scannable and easy to navigate
- On-device AI runs locally on Apple Silicon Mac
- Drafts replies in user's own voice and cadence
- Learns user's writing style, phrasing, and warmth
- Understands relationship with sender for context
- Picks up thread context for better drafts
- Avoids generic LLM tone in replies
- End-to-end encryption with user-held keys
- No Quartz servers read your inbox (none exist)
- All AI processing happens locally on device
- CASA Tier 2 certified under Google's security assessment
- Public beta is free for all users
- Works seamlessly on top of existing Gmail
- Built by experienced team at datarockets.com
- Reduces distractions from noisy emails
- Personalized importance sorting adapts to you
Quartz cons
- Only works on Mac with Apple Silicon (no Windows)
- iOS support mentioned but Mac is primary focus
- Requires Gmail only (no Outlook/Exchange support)
- Currently in beta (may have unpolished features)
- No long-term pricing published yet
- Limited to individual users (not team collaboration)
- No cloud backup mentioned for local data
- Requires modern Apple Silicon hardware only
- Beta may have bugs or feature gaps
- No web version available
- Limited platform support compared to competitors
- Must download separate app (not browser extension)
- Learning period needed for sorting to improve
- No mention of multi-Gmail account support
- Privacy architecture limits some cloud features
Frequently asked questions about Quartz
What is Quartz?
Quartz is an AI-native email client for Mac and iOS that works on top of Gmail. It auto-categorizes every message by importance—defined by you and learned over time—so important mail gets more visual space while routine items collapse out of the way. It also drafts replies in your own voice using on-device AI that learns your writing style, phrasing, and warmth.
How does Quartz sort my emails?
Quartz auto-categorizes every message by importance based on your definition and learns over time. Important mail gets the room it deserves in your inbox, while FYI, Icebox, and Noise emails collapse out of the way. You can correct the sorting once and Quartz learns from your correction to improve future categorization.
Is my email private with Quartz?
Yes, privacy is Quartz's core focus. All AI processing runs locally on your Mac—there are no Quartz servers reading your inbox because they don't exist. Your mail is end-to-end encrypted with keys only you hold. Neither Quartz nor anyone else can read your emails since nothing is uploaded to the cloud.
What hardware does Quartz require?
Quartz requires Apple Silicon Macs only. The on-device AI model that sorts your inbox and drafts replies runs locally on Apple Silicon. This is a product decision for local inference and clearer data handling. Windows users and Macs without Apple Silicon cannot use Quartz.
Does Quartz work with Outlook or other email providers?
No, Quartz currently works only with Gmail. It is designed as a Gmail client for Mac and iOS. Outlook, Exchange, and other email providers are not supported in the current beta version.
How does Quartz draft replies?
You give Quartz a few bullet points, and it drafts the full reply in your cadence, phrasing, and level of warmth. It learns how you write, understands your relationship with the sender, and picks up the context of each thread. Generic LLM tone is left at the door—drafts sound like you.
Is Quartz free to use?
Yes, Quartz is free for beta users during public beta. You download the app from Quartzmail.ai, connect your Gmail account, and start using it without paying. The website does not yet publish long-term pricing for paid plans after the beta ends.
What is CASA Tier 2 certification?
CASA Tier 2 certification means Quartz is independently audited and certified under Google's Cloud Application Security Assessment. This is a security certification that validates Quartz's privacy architecture and data handling practices for Gmail integration.
Can I use Quartz on iOS devices?
Yes, Quartz is an AI-native email client for both Mac and iOS. However, the primary focus in public beta is Mac with Gmail. The on-device AI runs on Apple Silicon Macs, and iOS support is part of the broader product vision.
Who built Quartz?
Quartz was built by the team at datarockets.com. Pavel Demeshchik is the Founder and CEO of Quartz. The company is called Red Panda Club and is based in Canada.