hieunc229/mailflare

What is it?

Key features

• 01Custom-domain mailboxes with send and receive via Cloudflare, Resend or Amazon SES.
• 02Routing rules to store, forward, reject or sort incoming mail.
• 03Calendar with repeating events, time zones and email invitations.
• 04Public booking links that let others reserve time on your calendar.
• 05File drive with storage on R2, B2 or S3.
• 06AI agents that search mail and draft replies, with MCP support for other AI tools.

Use cases

• Running company email on your own domain without paying for Google Workspace seats.
• Hosting a small team's mail, calendar and shared files on Cloudflare Workers.
• Deploying a single-container self-hosted setup on a personal server with SQLite.
• Letting clients book meetings through a public calendar link.

Quick start

1. 1

   Clone the repository and install dependencies

2. 2

   Copy the local development env file and install packages

   cp .dev.vars.example .dev.vars && npm install
3. 3

   Run the local database migration and start the dev server

   npm run db:migrate:local && npm run dev
4. 4

   Open localhost:3000 and add your Cloudflare credentials to .dev.vars

Things to know

• !Full deployment needs a Cloudflare account and a scoped CF_TOKEN API token.
• !Sending mail through Cloudflare requires the $5/month Paid Worker plan; Resend or Amazon SES offer alternatives.
• !New Amazon SES accounts start in a sandbox until AWS grants production access.
• !License is AGPL-3.0, which requires sharing source code of modified versions run as a network service.

In collections

Topics

FAQ

What is mailflare?

A self-hosted alternative to Google Workspace with custom-domain email, calendar, file drive, booking pages and AI agents, running on Cloudflare or Docker. Mailflare is a self-hosted suite for running email and collaboration tools on your own domain. It bundles custom-domain mailboxes, routing rules, a calendar with email invitations, a public booking page, file storage and built-in AI agents that can search mail, draft replies and manage events.

Is mailflare free to use? What license does it have?

mailflare is open source under the AGPL-3.0 license. Check the license terms before using it in commercial products.

Is mailflare still maintained?

Actively maintained. The last commit to mailflare was on Nov 6, 2026.

What can I use mailflare for?

Running company email on your own domain without paying for Google Workspace seats. Hosting a small team's mail, calendar and shared files on Cloudflare Workers. Deploying a single-container self-hosted setup on a personal server with SQLite. Letting clients book meetings through a public calendar link.

How do I install mailflare?

Clone the repository and install dependencies Copy the local development env file and install packages: cp .dev.vars.example .dev.vars && npm install Run the local database migration and start the dev server: npm run db:migrate:local && npm run dev Open localhost:3000 and add your Cloudflare credentials to .dev.vars

Where can I get mailflare?

The source code and installation instructions are on GitHub: https://github.com/hieunc229/mailflare