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Quartz — Startup Profile
Startup

Quartz

Email that knows what deserves your attention

Productivity & Collaboration

Astracia Signal Score

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About the startup

Quartz turns Gmail into a focused inbox. Every message is auto-sorted by how much it deserves your attention -- Critical, Routine, FYI, Icebox, Noise -- so important mail gets room to breathe and everything else collapses out of the way. The categories are yours to define, and Quartz learns them over time. Two things make it different. Privacy: all AI runs on your device (Apple Silicon), your mail is end-to-end encrypted with keys only you hold, and nothing is ever uploaded -- Quartz is CASA Tier 2 certified. Voice: when Quartz drafts a reply, it writes in your own cadence and warmth, informed by the thread and your relationship with the sender, not in generic LLM tone. Works on top of Gmail. Mac + iOS. Free during the private beta.

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Media about Productivity & Collaboration

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Shows and channels grouped by topic. A recommendation does not mean this profile was featured or endorsed.

Show

Thoughts from the Ivory Basement

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Founder stories from Productivity & Collaboration startups

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Retold founder accounts from startups in the same category, each linked to the original.

Story

ClickUp: From Selling Instagram Followers to a $4 Billion "All-in-One" Productivity App Built as a Side Project

Zeb Evans built a profitable business selling social media followers, then shut it down in 2016 after a health scare made him question his legacy. He moved to California with two early employees to look for a more positi

Nextcloud: The Founder Who Quit His Own Company, Forked His Own Project, and Took the Community With Him

Frank Karlitschek, a longtime KDE contributor, announced ownCloud at a KDE conference in 2010 as a way for people and organizations to host their own cloud files instead of handing them to Dropbox. Two years later he co-

Mattermost: A Struggling Game Studio Got Locked Out of Its Own Chat History and Built the Open Source Alternative to Slack

Ian Tien and Corey Hulen founded SpinPunch in 2011 as an HTML5 game engine company backed by Y Combinator, then pivoted to making games. When their team chat service degraded and then asked them to pay to get their own a

Deepgram: Two Dark Matter Physicists, a 24/7 Audio Diary, and a "Google for Sound"

Deepgram was founded in 2015 by Scott Stephenson and Noah Shutty, particle physicists who had been hunting for dark matter in a University of Michigan research group with experiments deep underground. When Shutty began r

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Subcategories in the same part of the directory, with the number of listed products.

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