Mailflare
Mailflare is a self-hosted email inbox for custom domains, built on Cloudflare.
Screenshots
 Inbox |
 Manage domains |
 Manage inboxes |
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What you can do
- Domain setup: Connect domains and set up Cloudflare Email Routing from the dashboard.
- Mailboxes: Create personal and shared mailboxes with delegated access.
- Email: Send and receive email with attachments, rich formatting, signatures, and automatic replies.
- Inbox organization: Organize mail with search, custom folders, stars, snoozing, archive, spam, and trash.
- Routing rules: Create routing rules to store, forward, reject, or categorize incoming messages.
- Notifications: Get real-time inbox updates and new-message notifications.
- Mail and contacts: Import and export mail, manage contacts, and block unwanted senders.
- Administration: Manage accounts, permissions, API keys, webhooks, audit logs, and database backups.
- Email AI Assistant: Use an AI assistant to search mail, work with threads, and prepare drafts for a selected mailbox.
- MCP access: Connect external AI clients through MCP with mailbox or admin permissions chosen for each key.
How it works
Mailflare runs in your Cloudflare account. Email Routing delivers incoming messages to the app, while Cloudflare's email service handles outgoing messages. Your mail data stays in your own D1 database and attachments are stored in your own R2 bucket.
How much does it cost?
You can setup Mailflare and receive email for free
A Paid Worker plan ($5/month) is required to send email (and it's recommend to have a smooth experience)
Deploy
Getting started takes three steps:
- Deploy the app. Click Deploy to Cloudflare and keep the app name as
mailflare. The app will not work correctly under another Worker name. - Complete setup. Open the deployed app and follow
/setupto check the installation and create your admin account. - Connect your domain. Add a domain managed by the same Cloudflare account. Mailflare configures its email routing and helps you create the first mailbox.
⚠️ IMPORTANT: CF_TOKEN is required during deployment. Create a scoped Cloudflare API token with the following permissions for the domains you want to connect.
- All accounts - Email Sending:Edit, DNS Settings:Edit, Email Routing Addresses:Edit
- All zones - DNS Settings:Edit, Email Routing Rules:Edit, Zone Settings:Edit, DNS:Edit
See the deployment guide for required permissions, manual deployment, backups, and updates.
Self-host with Docker instead
Mailflare also runs as one container on any server, with SQLite and local files in place of D1 and R2, a built-in SMTP listener for inbound mail (or a small Cloudflare relay Worker if you want to keep MX on Cloudflare), and any SMTP relay or Cloudflare Email Sending for outbound.
cp .env.docker.example .env.docker
docker compose up -d --build
See docs/self-hosting.md.
Local development
cp .dev.vars.example .dev.vars
npm install
npm run db:migrate:local
npm run dev
Add your Cloudflare credentials to .dev.vars, then open http://localhost:3000. For sample local data, run npm run db:seed while the development server is running.
The Cloudflare app uses vinext and the Cloudflare Vite plugin, including local D1, R2, Queues, and Durable Objects. Remote bindings are disabled by default. To use Workers AI locally, authenticate with Wrangler, select your account with CLOUDFLARE_ACCOUNT_ID, and run CLOUDFLARE_REMOTE_BINDINGS=true npm run dev.
npm run build builds the complete Worker; npm run start previews that build locally. npm run deploy builds and deploys it. The separate Node/Docker runtime still uses Next.js and the existing build:node, start:node, and dev:node commands.
Documentation
License
See LICENSE.