OpenInbox

Judgement

What it is

Complete system

What it does

Business email on your own domains run entirely inside a Cloudflare account, using Cloudflare Email Routing and Workers for mailboxes, aliases and a webmail.

Adopt it when

A small business already on Cloudflare wants free mailboxes for several domains and can tolerate beta software on a spare domain first.

Watch out

Two weeks old and self-described beta, and it depends on Cloudflare's free-tier limits and email features staying as they are.

Ready for

Experimental

Runs as

Cloud service

Built with

TypeScript, React, Cloudflare Workers and Tailwind CSS

How established

New: started under a month ago, latest release v1.0.0.

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: OpenInbox → TypeScript → Go → runs on a microchip

How compilers were built, back to punched paper tape

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