Blue Folder Mail
A private mail app you install on your own Cloudflare account. Read and reply from all your addresses, on your Mac and your iPhone.
12 messages · 5 unread
Encrypted — only you hold the key
Hi, Could you ship both tins of Silver Needle together? I'm in Rotterdam until Friday, so the hotel address is best. Thanks, Lena
Unlimited domains · Encrypted with your key · About $5 a month to Cloudflare · Sample messages
WHY NOW
From January 2027, you can no longer reply as support@yourbusiness.com from a Gmail inbox. If that is how you run your businesses today, you need a new home before then.
The usual replacements are priced per user and limit how many domains you can add. That suits a company with one domain and many staff. It doesn't suit one person running twenty domains.
Blue Folder Mail is built for the second case. Every domain you own, one inbox, one price.
Everything arrives in one place, sorted by the address it was sent to.
REPLY AS
Mail sent to orders@ is answered from orders@. Mail sent to studio@ is answered from studio@. You can switch to any address on any of your domains before you send.
Lena wrote to orders@, so that's the From address. No setup per address.
YOUR KEY
Each message is encrypted the moment it arrives, with a key only your devices hold. The server keeps scrambled text it can't open. You sign in with a passkey — Face ID or Touch ID.
q8Vx3Tf0kP1mZ9wR2s7L/rc3bAe6Ju0yHn4XpQd1Gv8Ws5Ko2Tz…
Unlocked with your key, on your device
Order #2041: two tins of Silver Needle
UNLIMITED
No per-domain fee and no cap on addresses. Catch-all delivers mail sent to any address at your domain, including ones you never set up.
anything@ arrives, and you can reply as it.
MAC + IPHONE
Add it to your iPhone home screen or your Mac's Dock. It opens full screen, like an app, and keeps recent mail for weak connections.
YOURS
The app runs on your own Cloudflare account, so your mail lives there and not with us. You get the full source code, and you can export everything to standard .eml files whenever you like.
VERIFIED
We don't ask you to take the encryption on faith. Blue Folder Mail ships with automated tests that run on every update and prove the core promise:
Zero-access encryption — the server stores your mail but can't read it. Read the full security details before you buy.
Do it yourself with the guide, or choose done-for-you setup and we'll do all three.
Choose self-install or done-for-you setup. You receive the full source code and the install guide.
The guide walks you through creating the app, its storage and its database on your own Cloudflare account. Then you add your Mac and iPhone and set up your key.
Turn on Cloudflare Email Routing for each domain and send it to the app. Your websites keep working as they are.
Prices in US dollars. No subscription to us.
$399one-time
The software and install guide. You set it up yourself.
$699one-time
We install it and connect your domains for you.
Cloudflare's running cost — about $5 a month for the Workers Paid plan — is paid by you directly to Cloudflare, not to us. Mail storage is free up to 10 GB.
One payment. Every domain you own, in one private app on your own Cloudflare account.
A Cloudflare account and your domains. Each domain needs to use Cloudflare for its DNS, which is free to set up. Sending mail needs Cloudflare's Workers Paid plan, about $5 a month.
No. Blue Folder Mail is a web app. You add it to your iPhone home screen or your Mac's Dock and it opens full screen like an app, but it doesn't connect to Apple Mail, Outlook or other mail apps.
Only you. Cloudflare handles each message for a moment as it arrives, then the app encrypts it with a key only your devices hold, and the server keeps scrambled text it can't read. You sign in with a passkey. Even with done-for-you setup, our access is to set up your account and mail records, not to open your mail, and it ends when setup is done.
Your mail exports to standard .eml files at any time, so you're never locked in. You also own the source code, so the app can be adjusted if a Cloudflare service changes.
As many as you own. There is no per-domain or per-address price. With catch-all turned on, mail to any address at your domain arrives, and you can reply as that address.
No. Blue Folder Mail is sold as source code, so all sales are final. Please read what it does and the FAQ before buying.