Find AI Business IdeasBuild an AI assistant that helps people clear their email inbox
In short: about $0–$100 to start and about 12 hours a week (our estimates), intermediate level. First step: Ship a waitlist and a narrow V1 that drafts replies or labels mail for Gmail, then launch on Product Hunt and Hacker News.
A founder who was drowning in email built an AI inbox assistant that works next to Gmail and Outlook. Here is how it started.
Best fit if: you have felt inbox overload yourself and can ship a product that plugs into email. Skill level: Intermediate.
Who did it
| Role | Founder of Inbox Zero, based in Tel Aviv |
|---|---|
| Background | Had run marketplace and agency businesses and spent too much time on email |
What they did
| Solved his own pain | He wanted an assistant for email because a human one was expensive. |
|---|---|
| Stays beside the client | The product works with Gmail and Outlook instead of replacing them. |
| Waitlist then launch | About 150 people joined the waitlist before a full release. |
| Public launches | Product Hunt brought the first 100 customers; Hacker News and GitHub Trending added more traffic. |
“Do one thing, do it well, and make sure your users can get to value quickly.” From Elie Steinbock, in his Starter Story interview
How it went
| Build time | A part time prototype over a couple of months; V1 launch around month 5 |
|---|---|
| Waitlist to launch | Product Hunt took signups from about 150 to roughly 2,000 |
| Team | 1 founder and 2 employees at the time of the interview |
| Revenue | They report $10,000 revenue/mo (Starter Story). |
Self-reported by the founder, not verified by us, and not typical. Source*: Starter Story.
Tools they used
| Named in the source | Gmail and Outlook as the email clients users keep; Product Hunt, Hacker News, YouTube, SEO and GitHub Trending for distribution. Exact model names are not the focus of the interview. |
|---|
What it cost to start
| Reported | He built part time for months. A dollar total for launch spend is not given. |
|---|---|
| Our estimate | $0 to $100 for hosting, APIs and a domain while testing. This is our estimate. |
| Time | About 5 months to the V1 launch described in the source. |
Try it yourself: step by stepOur suggested plan
These steps are our suggestion, not what the source did step by step.
| 1. Narrow one job | Pick one clear job such as drafting replies or labeling mail, not every inbox problem. |
|---|---|
| 2. Ship a thin V1 | Connect one email provider and solve that one job well. |
| 3. Open a waitlist | Collect emails while you polish onboarding. |
| 4. Launch in public | Post on Product Hunt, Hacker News or a niche community with a short demo video. |
| 5. Talk to users | Use early feedback to decide what to cut, not what to add. |
| 6. Raise price thoughtfully | Test team or higher tier pricing once individuals get value. |
Worth knowing
| Crowded category | Several AI email tools launched after he started. |
|---|---|
| Focus risk | He says solving too many problems at once made the product harder to explain. |
| Low price math | He notes that very cheap monthly plans make a large business hard. |
| Results vary | Results vary. Most people earn less, and some earn nothing. |
At a glance
| Startup cost | $0–$100 (Under $100 tier, our estimate) |
|---|---|
| Hours / week | About 12 (our estimate) |
| Complexity | Intermediate |
| Time to first dollar | 3 to 6 months (estimate by this site, not sourced) |
| Tools | Gmail or Outlook API, LLM API, Next.js, Stripe, Product Hunt |
| First step to first customer | Ship a waitlist and a narrow V1 that drafts replies or labels mail for Gmail, then launch on Product Hunt and Hacker News. |
| Reported result | $10,000 revenue/mo A self-reported story from Starter Story*. Our automatic check found this figure in the source text on 2026-10-14. We do not verify it, and it is not typical. |
Quick answers
How much does it cost to start: Build an AI assistant that helps people clear their email inbox?
About $0–$100 to start, by our estimate (Under $100 tier). Tools: Gmail or Outlook API, LLM API, Next.js, Stripe, Product Hunt.
How many hours a week does it take?
About 12 hours a week, by our estimate. Complexity: Intermediate.
What is the first step to a first customer?
Ship a waitlist and a narrow V1 that drafts replies or labels mail for Gmail, then launch on Product Hunt and Hacker News.
How long until the first dollar?
3 to 6 months. This is an estimate by this site, not sourced, and many people earn less or nothing.
Results are self-reported by third parties and not verified by us. Most people earn less. Not financial, legal or business advice. Full disclaimer.
Source: Starter Story*, accessed 2026-10-14