An Open-Source Gmail Alternative for the Future of Email

Mail0.io is an open-source email solution that gives users the power to self-host their own email servers while also integrating external services like Gmail and other email providers. Our goal is to put control, privacy, and customization back into the hands of users—whether they choose to host their email independently or manage multiple inboxes from a single, customizable platform.

Most email services today are either closed-source, data-hungry, or too complex to self-host. Mail0.io is different:

✅ Fully Open-Source – No hidden agendas, no walled gardens. 100% transparency.
🔒 Data Privacy First – Your emails, your data. No tracking, no selling, no middlemen.
⚙️ Self-Hosting Freedom – Run your own email server with ease.
📬 Unified Inbox – Connect multiple email providers like Gmail, Outlook, and more.
🎨 Customizable UI & Features – Tailor your email experience the way you want it.
🚀 Developer-Friendly – Built with extensibility and integrations in mind.

We believe email should be:

1. Yours – You control where your data is stored.
2. Flexible – Use it however you want—self-hosted or connected to third-party providers.
3. Open – Transparent development, open collaboration, and community-driven innovation.
4. User-Friendly – No need for technical expertise to get started.

We're in the early stages of development, and we’re shaping the future of Mail0.io together with the community. Some key areas we will focus on:

• Core Email Server – A lightweight, reliable self-hosted email server.
• Email Client – A sleek, customizable web app for managing emails.
• Gmail & External Email Integration – Support for linking third-party email services.
• Privacy-Focused Features – Encryption, tracking protection, and secure authentication.
• Developer API – Extensible tools for building integrations and automations.

Mail0.io is not just another email app—it's a vision for a better, more open, and user-controlled email ecosystem. If you believe in privacy, open-source software, and giving users control, we’d love for you to join us!

📢 Follow our progress – Stay updated on GitHub as we build Mail0.io.
💡 Contribute – Share your ideas, suggest features, and help shape the project.
🤝 Community-driven – Our goal is to create an email solution for the people, by the people.

We’re just getting started. If you’re excited about a future where email belongs to users, not corporations, let’s make it happen together.

🤍 Mail0.io – Email, Reimagined.

This is a Next.js project bootstrapped with create-next-app.

First, install the dependencies:

npm install
# or
yarn install
# or
pnpm install
# or
bun install

Then, run the development server:

npm run dev
# or
yarn dev
# or
pnpm dev
# or
bun dev

Open http://localhost:3000 with your browser to see the result.

You can start editing the page by modifying app/page.tsx. The page auto-updates as you edit the file.

This project uses next/font to automatically optimize and load Geist, a new font family for Vercel.

To learn more about Next.js, take a look at the following resources:

• Next.js Documentation - learn about Next.js features and API.
• Learn Next.js - an interactive Next.js tutorial.

You can check out the Next.js GitHub repository - your feedback and contributions are welcome!

The easiest way to deploy your Next.js app is to use the Vercel Platform from the creators of Next.js.

Check out our Next.js deployment documentation for more details.