Inbox Zero Mail is an open-source email client for Gmail and Outlook. Fast, keyboard-first, and free to use, on web, Mac, Windows and iPhone, with all your accounts in one inbox. Add AI for $20/mo: every email is sorted, and replies are drafted in your voice before you open them. Comment privately with your team, get Slack alerts, and give the AI context from your tools.
I’m excited to launch Inbox Zero Mail, an open-source Superhuman alternative.
I’ve been running Inbox Zero for 3 years. It started as an AI assistant for Gmail and Outlook, and grew to 12k GitHub stars and 25k+ sign-ups, including Enterprise customers.
Now we’ve built our own email client.
It’s open source, so you can self-host it or build the feature you’ve always wanted.
⚡ Fast and keyboard-first
📥 All your Gmail and Outlook accounts in one inbox
🗂️ Split inbox
✍️ AI drafts in your voice
🧹 Bulk unsubscribe
💬 Team comments
📱 Web, Mac, Windows and iPhone
Free to use. AI is $20/month.
🎁 Code PRODUCTHUNT26 gets 50% off AI for 3 months.
What would you most like to see added to an open-source email app?
About Inbox Zero on Product Hunt
“Open-source Superhuman alternative”
Inbox Zero launched on Product Hunt on October 18th, 2026 and earned 275 upvotes and 27 comments, earning #1 Product of the Day. Inbox Zero Mail is an open-source email client for Gmail and Outlook. Fast, keyboard-first, and free to use, on web, Mac, Windows and iPhone, with all your accounts in one inbox. Add AI for $20/mo: every email is sorted, and replies are drafted in your voice before you open them. Comment privately with your team, get Slack alerts, and give the AI context from your tools.
On the analytics side, Inbox Zero competes within Email, Open Source, Artificial Intelligence and GitHub — topics that collectively have 628.5k followers on Product Hunt. The dashboard above tracks how Inbox Zero performed against the three products that launched closest to it on the same day.
Who hunted Inbox Zero?
Inbox Zero was hunted by Ben Lang. 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.
Ben Lang
Hey Hunters 👋
I’m excited to launch Inbox Zero Mail, an open-source Superhuman alternative.
I’ve been running Inbox Zero for 3 years. It started as an AI assistant for Gmail and Outlook, and grew to 12k GitHub stars and 25k+ sign-ups, including Enterprise customers.
Now we’ve built our own email client.
It’s open source, so you can self-host it or build the feature you’ve always wanted.
⚡ Fast and keyboard-first
📥 All your Gmail and Outlook accounts in one inbox
🗂️ Split inbox
✍️ AI drafts in your voice
🧹 Bulk unsubscribe
💬 Team comments
📱 Web, Mac, Windows and iPhone
Free to use. AI is $20/month.
🎁 Code PRODUCTHUNT26 gets 50% off AI for 3 months.
🧹 Try it today: https://www.getinboxzero.com
⭐️ Give us a star on GitHub: https://www.getinboxzero.com/github
What would you most like to see added to an open-source email app?