Free and open source

Apps I've built. Yours to run.

I'm Paul O'Brien. I write about email at paulobrien.com, and along the way I've built a few apps that run on your own Cloudflare account. They're free, the code is open, and you're in control.

See the apps Get launch news

# your own email, on your own Cloudflare
$ deploy mail-app
✓ Worker ready      mail.yourdomain.com
✓ Email routing     on
✓ Sign-in           passkeys

# your own blog, same idea
$ deploy blog-builder
✓ Blog live         yourdomain.com
✓ Theme             notebook

# free and open source

// the apps

Two apps, both free.

Each one installs into your own Cloudflare account. Your mail, posts and readers stay there, and nothing depends on me to keep running.

Mail App

Business email on your own domain. Inbox, calendar, contacts, shared inboxes and a spam filter, for you or your whole team.

v1.71
66 releases
Cloudflare Workers

More about Mail App

Blog Builder

A fast blog or website with 16 themes, a proper editor and an easy move from WordPress. Built on EmDash.

v1.3.1
16 themes
EmDash

More about Blog Builder

Also by me: Blog by Email. A free blog you write by email. Your subject line becomes the title and your email becomes the post.

// the deal

Free, open and yours.

FreeNo licence, no trial, no catch. Cloudflare bills you directly for anything past its free plan.

Open sourceRead every line, change what you like and run your own copy.

Your CloudflareIt all runs in your own account, so your data never comes to me.

Help on GitHubQuestions and bugs go in GitHub issues, where everyone can see the answers.

// built with

What's under the hood.

Both apps run on Cloudflare's developer platform, in your own account.

Mail App

Cloudflare Workers
Durable Objects
R2
Email Routing
Workers AI
TypeScript
React Router
Hono
Tailwind CSS

Blog Builder

Cloudflare Workers
D1
R2
KV
EmDash
Astro
TypeScript

// what's next

What I'm working on.

Where both apps are heading next. These are fun projects, so dates may move.

Now

Public on GitHubBoth apps move to their own open-source repos, free to use with no licence key.

Install from npmOne command to install or update, for anyone happy in a terminal.

Deploy to Cloudflare buttonOne click from GitHub copies the app into your own Cloudflare account.

One-click installerSign in with Cloudflare, pick your domain and you're done. No terminal.

Later

Mail App on your phoneiPhone and Android apps with the same privacy as the web app.

Your branding on sign-inYour logo, name and colour on the page your team signs in on.

Got an idea for either app? Tell me about it

// about me

Hi, I'm Paul.

I've spent years testing email providers and writing about them at paulobrien.com. These apps started as fun projects: I wanted to see how far I could get running email and a blog on Cloudflare alone. I've learnt a lot and enjoyed building them, so now they're free for anyone to use.

Going public soon

Get an email when the code is public.

I'm moving Mail App and Blog Builder to public GitHub repos. Leave your email and I'll tell you when each one is ready to install, and when there's a new version. Nothing else.