Quartz turns Gmail into a focused inbox. It sorts every message by importance, and learns what matters to you over time. When you reply, it drafts in your own voice. And the AI runs entirely on your own Mac, so your mail stays end-to-end encrypted and never shared with AI providers.
We built Quartz because our own inboxes had become impossible to keep up with.
AI made it easier than ever to send emails at scale. We think AI should also help people defend their inboxes from that noise.
Quartz is an AI-native email app that protects your focus and helps you get through email faster. It learns your style and preferences over time, so it gets better the more you use it.
And because email is private, Quartz runs entirely on your device. Your emails are not sent to AI providers.
Excited to share it with you today. We’re currently in public beta and free to use.
Quartz finished the day at #4 and that was a pleasant surprise!
When you're three founders with no launch budget, every upvote is a person who chose to spend a minute of real attention on you. That's the whole thing we're trying to protect with Quartz, so it means more than I can say to have felt it from this community yesterday.
I want to thank everybody who supported us and even bigger thank you to those who actually installed our app and shared feedback. Getting real people to try Quartz out was our main goal for this launch. So if you haven't had a chance yet, please give it a go and tell us your honest opinion - we're reading and replying here all day.
local AI for email is the right privacy architecture and the right differentiator against every other AI email client. the trust question for email tools is specifically about whether your correspondence is being used to train models or stored on someone else's servers. running on your own Mac removes that question entirely rather than asking users to trust a privacy policy
Interesting approach. Curious how well it adapts to different writing styles over time
Running AI locally is a big deal for privacy. Most email tools want you to hand over everything to their servers. Quick question, does it handle multiple Gmail accounts or just one?
Local first AI on Tauri for inherently private data (email here, but the pattern generalizes to trading, health, code) is the architectural answer to "I want AI but not in the cloud." The hardest part isn't the model. It's the bundling and update story. How are you handling the Gemma 4 E4B model size in the Tauri bundle, shipping it bundled, downloading on first launch, or external dependency? And how do you handle model updates without re-downloading the entire 4GB+ weight file each time?
The "learn from sent emails in this thread first, then to same person, then others" hierarchy is a smart loop. I'd be curious what happens for users with very short reply history. Does the model fall back to a base "professional but warm" voice, or does it just produce neutral drafts until enough signal accumulates? The cold-start problem is the part most local-first AI tools handle poorly.
Congrats on the launch.
Great project! You mentioned how cold emails create clutter and this tools helps dealing with that.
Do you think we can expand this into agent2agent communication? Like both sides essentially have AI messaging each other and if things make sense, the issue gets escalated to humans.
One of the reasons we treat cold emails as spam is because there are so many of them. However, if there is a proper processing layer, I actually do wish people to reach out to me and let me know how they can bring value.
An email product built around focus! I love that:)
Is there a way to identify which emails are important besides manually marking them myself?
We just shipped v0.1.84 and it's a nice mix of "finally" fixes and quality-of-life polish. A few highlights:
🔗 Links in plain-text emails are now tappable. Bare web addresses in plain-text messages are live, clickable links now — no more copy-pasting URLs into your browser. Just tap and go.
🍎 Sign-in is reliable again on older macOS. Connecting your account could crash on macOS 14.0–14.3. That's fixed, so sign-in works no matter which version you're on.
Plus a round of refinements:
Recipient names with commas or quotation marks now display correctly — no more split-up addresses or stray escaped quotes in recipient chips.
Draft with AI now has a clear submit button, so it's obvious how to send your prompt.
Settings panels share consistent, polished typography for a cleaner, more cohesive feel.
The Telemetry panel shows your analytics ID as a read-only field — handy for privacy checks and support.
How does the filtering work? This would be extremely useful if it had some learning mechanism that delivered personalized results.
Appreciate not having to add yet another service to the chain just to get the AI-powered goodies in the email client. Local LLM is the way. Congrats on the launch! 🚀
Whoa, this looks really slick! Big kudos on making the AI fully local, too 👍👍👍 I might actually stand a chance at processing my 5k unreads 🤔
Local-on-Mac with Gemma on-device is a great privacy angle, that's exactly why I run my own AI tools on my own machine too. One thing I haven't seen asked: since the model runs on the Mac, what happens to sorting and drafts when the laptop is asleep or closed? Does it catch up the moment you reopen it, or do you need it awake to keep processing? Congrats on the launch.
Focus and privacy in the same product is rare for an email client. Does it handle multiple accounts in one inbox?
the 'drafts in your own voice' bit locally is what i'd watch — no per-user training step means few-shot on your sent mail, so the voice match lives or dies on which examples get picked.
Been dreaming about this for a while but for comms more broadly: telegram, whatsapp, etc. I think Eric (former YC partner) tried this. Good luck!
Congrats on the launch! This tool would definitely make my life easier. Does it support adding multiple emails/domains, to tackle everything at once?
Running the AI locally and keeping emails end-to-end encrypted is the right call — most people don't realize how much of their inbox ends up on third-party servers. The "learns your voice" for drafts is the feature I'm most curious about.
How long does it take for Quartz to actually learn your writing style — is it noticeable after a few replies or does it take weeks?
Our changelog for today so far
About Quartz on Product Hunt
“AI email client built for focus. Runs locally on your Mac”
Quartz launched on Product Hunt on June 17th, 2026 and earned 248 upvotes and 66 comments, placing #4 on the daily leaderboard. Quartz turns Gmail into a focused inbox. It sorts every message by importance, and learns what matters to you over time. When you reply, it drafts in your own voice. And the AI runs entirely on your own Mac, so your mail stays end-to-end encrypted and never shared with AI providers.
Quartz was featured in Email (36.7k followers), Productivity (655.6k followers) and Artificial Intelligence (473.1k followers) on Product Hunt. Together, these topics include over 257.3k products, making this a competitive space to launch in.
Who hunted Quartz?
Quartz was hunted by Pavel Demeshchik. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Quartz stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Pavel Demeshchik
Hi Product Hunt!
We built Quartz because our own inboxes had become impossible to keep up with.
AI made it easier than ever to send emails at scale. We think AI should also help people defend their inboxes from that noise.
Quartz is an AI-native email app that protects your focus and helps you get through email faster. It learns your style and preferences over time, so it gets better the more you use it.
And because email is private, Quartz runs entirely on your device. Your emails are not sent to AI providers.
Excited to share it with you today. We’re currently in public beta and free to use.
We’d love to hear what you think!