Mailflare

A self-hosted alternative to Google Workspace. Setup custom domain Emails, Calendar, Drive, Booking and built-in AI agents.

Run it on Cloudflare or Docker. Send and receive with Cloudflare, Resend or Amazon SES. Store files in R2, Backblaze B2 or AWS S3. Use D1, Postgres, MySQL or Turso for the database.

Screenshots

Inbox	Domains	Mailboxes
Calendar	Booking	Drive

Sponsors

 

Want to support Mailflare? Become a sponsor.

Features

Apps

• Email: Custom domain mailboxes, personal or shared, with access you control. Send and receive with Cloudflare Email, Resend or Amazon SES.
• Routing rules: Store, forward, reject or sort incoming mail.
• Calendar: Repeating events with time zones. Attendees get email invitations.
• Booking: Share a public link so anyone can book a free time on your calendar.
• Drive: Store and share files.
• AI agents: Search mail, draft replies and manage events. Connect other AI tools over MCP.

Technical

• Databases: Cloudflare D1 (default), PostgreSQL, MySQL, Turso / libSQL, or a local SQLite file. Set DATABASE_URL to switch. Works with Supabase, Neon, PlanetScale, TiDB and more. See Databases.
• File storage: Cloudflare R2, Backblaze B2 or AWS S3.
• Hosting: Cloudflare Workers or a single Docker container.
• Admin: Users, API keys, webhooks, audit logs and backups.
• Import: Bring in mail from IMAP, Gmail Takeout, .eml and .mbox files.

Mailflare currently supports 34 languages, including English, Português (Brasil), Português (Portugal), Español, Français, Deutsch, Italiano, Nederlands, Polski, Українська, Русский, Türkçe, 中文（简体）, 日本語, 한국어, Bahasa Indonesia, Bahasa Melayu, Tiếng Việt, ไทย, हिन्दी, বাংলা, मराठी, తెలుగు, தமிழ், ગુજરાતી, ಕನ್ನಡ, മലയാളം, ਪੰਜਾਬੀ, සිංහල, Kiswahili, Hausa, plus العربية, اردو and فارسی (right-to-left).

Cost

You can receive and send mail for free.

• Receiving: Cloudflare Email Routing is free.
• Sending: Use the free tier of Resend (3,000 emails a month) or Amazon SES. Cloudflare's own sending needs the $5/month Paid Worker plan.

New Amazon SES accounts start in a sandbox. Ask AWS for production access to lift it. Prices change, so check Resend, Amazon SES and Cloudflare.

Deploy

1. Deploy the app. Click Deploy to Cloudflare. Keep the app name mailflare, or it will break.
2. Finish setup. Open the app at /setup and create your admin account.
3. Connect a domain. Add a domain from the same Cloudflare account, then create your first mailbox.

CF_TOKEN is required. Create a scoped Cloudflare API token with these permissions:

• 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

More options: deployment guide.

Deploy with an AI agent

Paste this into an AI agent that has terminal access (Claude Code, Codex, Cursor and similar):

Install Mailflare for me from https://github.com/hieunc229/mailflare on my Cloudflare account.

1. Read README.md, docs/deployment.md and wrangler.jsonc first.
2. Ask me for my Cloudflare account ID and two API tokens, using a secret input:
   a deploy token (for Wrangler) and a runtime token (the Worker secret CF_TOKEN).
   Never print them, commit them, or pass them as command arguments.
3. Keep the Worker name exactly "mailflare". Create or reuse the D1 database
   "mailflare", the R2 bucket "mailflare-raw", and the queues "mailflare-inbound",
   "mailflare-outbound" and "mailflare-agent".
4. Install dependencies, run `npm run deploy`, and set CF_TOKEN as a Worker secret.
   Do not run remote database migrations yourself. The /setup page does that.
5. Give me the app URL and anything I still need to do. I will open /setup, create
   the admin account and connect my domain.

Token permissions and more options: deployment guide.

Self-host with Docker

Runs as one container on any server, with SQLite and local files.

cp .env.docker.example .env.docker
docker compose up -d --build

See self-hosting.

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 localhost:3000. Run npm run db:seed to load sample data.

• npm run build: build the Worker
• npm run deploy: build and deploy
• npm run lint: lint and type check

A schema change needs a migration for each database type. See Databases.

Documentation

• Deployment and configuration
• Databases
• Sending and receiving providers
• API and integrations
• Email assistant and MCP
• Adding a language
• Troubleshooting

License

See LICENSE.