Zero

The Setup

Everyone Hates Email. Nobody Fixed It.

Knowledge workers spend roughly 30% of their working week on email. Not reading reports. Not building things. Not making decisions. Opening, sorting, skimming, archiving, drafting polite replies to messages that could have been a sentence long. It's a productivity tax so normalized that people stopped noticing it was there.

Then Nizar Abi Zaher and Adam Wazzan looked at every existing email client and concluded they had all made the same mistake: bolting AI on top of an interface designed for a world before AI existed. Gmail's "Smart Compose" is a Band-Aid. Superhuman is fast. But neither was built for a world where a model could just read the thread and tell you what matters.

Zero started from a different question: if you designed an email client today, knowing what AI can do, what would it look like? The answer is Zero - and it lives at 0.email.

The Product

Six Things Your Inbox Should Already Be Doing

Zero is not a prettier wrapper around Gmail. It's a different mental model: instead of you managing email, your email manages itself while you stay informed. Here's what that looks like in practice.

The People

Two Builders, One Very Big Inbox Problem

Nizar Abi Zaher was 21 when he co-founded Zero. He came via Carleton University, briefly considered law, and pivoted toward early-stage technology before most people his age finish figuring out their major. He's the kind of person who finds a problem that affects a billion people and decides that's sufficient motivation to start a company.

Adam Wazzan brings the engineering depth. With over a decade of experience across React, Vue.js, NestJS, GraphQL, and TypeScript, plus stints leading engineering teams and holding CTO roles, Adam has the architecture chops to build something that actually scales. He's worked across web development, Web3 gaming, and AI platforms - which makes Zero's full-stack AI-native infrastructure look less like an ambitious bet and more like a natural progression.

Two founders, one product, no bloat. The lean setup is intentional. Most software gets slow because organizations get slow. Zero keeps the team small so the product can move fast.

The Architecture

Open Source Isn't a Strategy. It's a Commitment.

The Zero codebase lives on GitHub under the Mail-0 organization. All of it. 10,500+ stars and 1,300+ forks from developers who wanted to see how it worked, contribute to it, or run their own version. That kind of community traction, in months, is not something you engineer with a PR campaign. It's something that happens when you build something genuinely good and then let people see the work.

Open source also solves the trust problem. Email is personal. Confidential. The sort of data that makes people cautious about handing it to a startup with a sleek landing page and no track record. When the code is public, cautious developers can audit it. Enterprise teams can deploy it on their own infrastructure. Skeptics can look under the hood.

Zero offers both paths: use the hosted version at 0.email, or run it yourself. That's a harder product to build. It's also the right one.

The Backing

Y Combinator, $2M, and a Waitlist That Didn't Need Convincing

Zero went through Y Combinator's X25 batch in Spring 2025 - one of roughly 200 companies accepted from thousands of applicants. YC is selective precisely because it's a signal: the team, the idea, and the early traction met a high bar.

The $2M seed round came together with 1984 Ventures leading, alongside Pioneer Fund and Y Combinator. The money funds product development and the infrastructure required to serve thousands of inboxes with AI in the loop. It's a lean raise for a lean team - which is the point. Zero isn't building a 200-person org before it's proved the core product works. It's building the core product first.

Before the public beta even launched, over 1,500 knowledge workers had joined the private waitlist. Of those who got early access, more than 90% reported saving at least three hours per week. That's not marketing copy - that's people who got in early and immediately wondered how they'd managed without it.

The Bigger Picture

Email Is the Last Productivity Problem Nobody Solved

There have been waves of email productivity tools. Filters. Labels. Priority Inbox. Unsubscribe services. Email clients with keyboard shortcuts. Email clients with snooze. Apps that archive everything. Apps that surface nothing. They all assume the same thing: that with the right interface, you can manage email better.

Zero assumes something different: that the goal isn't to manage email better, it's to delegate most of it to a system that's better at triage than humans are. Reading 200 emails a day to find the 10 that matter is not a human skill. It's a machine task that humans got stuck with because there wasn't a machine good enough to take it.

There is now. That's Zero's window. AI has reached the point where it can read context, understand intent, draft coherently in your voice, and make reasonable triage decisions without constant supervision. The product that captures that moment for email will matter in the same way Slack captured real-time messaging or Notion captured collaborative documents.

Zero is early. It's a two-person team running a public beta. But the GitHub stars don't lie, and 1,500 people don't join a waitlist for a product they're not excited about.