kaimoku

開目Opening one’s eyes.

Kaimoku Technologies builds software that pays attention to the things software has stopped paying attention to. That means infrastructure you can see into, run by people who show their work.

What we believe

Our name, Kaimoku, is made from the character to open, 開く, and the character for eye, 目. It reflects both an instruction and a promise: the tools we build should let you see what is actually in front of you, not what a generic interface assumes you would want to see.

We build few things, and we run every one of them ourselves.

Who we are

What we noticed

Email is a black box. When a message goes missing, the sender cannot prove it was sent, the receiver cannot prove it never arrived, and the logs that could settle it sit where neither of you can reach them. We cannot see inside Gmail’s spam folder. Neither can anyone who tells you they can. What we can do is show you everything that reached us: every hop a message took, how it fared against SPF, DKIM and DMARC, and exactly why it scored what it scored.

None of this is neglect. Email was declared finished a long time ago — infrastructure, a solved problem, something to keep running rather than something to keep improving — and a field declared finished stops moving. The people who run mail do careful work. Innovation around them stalled.

Meanwhile the parts that kept changing became a specialty. SPF, DKIM, DMARC — the records that decide whether your mail is believed — now take a specialist to get right, and most organizations do not have one. So they hand the domain to someone who does. We think checking a DNS record, and repairing it, is work software should do in front of you.

And the address that carries your name is not quite yours. Your domain, your archive, your correspondents live inside someone else’s product, on terms someone else wrote. It works well enough most days, which is what makes it easy to stay. But good enough is not the same as chosen, and most people running their mail this way never chose it at all.

Email stopped moving. We are moving it.

Kuju Email

Coming soon

A complete email platform that fits the work.

Email infrastructure that pays attention. Security woven through the workflow rather than bolted beside it, calendar and contacts that sync with any standard client, and a choice of UI modes for the way the work actually changes shape. The service is inbound mail on your domain — IMAP, webmail, calendar, and contacts — with spam scoring, quarantine, and virus checks as part of delivery. Mail is encrypted in transit and at rest. You can see what arrived, what was held, and why.

Learn about Kuju Email

Beads Roadmap

Open source

A roadmap read off the issue board, not written beside it.

A Claude Code plugin and command-line tool that derives a product roadmap from a beads issue board every time it runs: the version in flight, a hotfix queue, unscheduled work, and scope creep against a pinned baseline. It never writes to the board, and it says nothing when nothing has drifted. We built it to plan Kuju Email and use it every day. MIT licensed.

Beads Roadmap on GitHub

Our values

Choice.
Your domain, your archive, your users are yours. Our job is to run them well, show you what we are doing, and make leaving as straightforward as staying — so that every year you stay is a year you chose.
Open.to you
Clear pricing, honest documentation, visible operations. When you want to know what happened to your mail, we show you: what arrived, what was held, and why. And when something cannot be seen — by us or by anyone — we say so.
Defended.
Email is a high-value target. We treat defending it as part of running it, not as a feature you enable or a tier you buy. Quietly, as standard.
Private.from them
We do not sell your data, and we do not share it to advertise. Mail is encrypted in transit and at rest. A tool that is not required to run the service sees your mail only after we ask, in plain words, and you agree.
Aware.
We pay attention. To our customers, to our systems, to the world. We do not see everything. We keep finding new ways to notice and to protect, and we keep changing the platform so it serves the people who use it.