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[ About ]

Jobs aren't lost on site. They're lost in the inbox.

The Data Key is a studio in Leuven, Belgium. We build QuoteKey, so every quote an installer sends gets an answer.
A steel square against a smooth bone-white plaster wall.

What we stand for

  1. 01

    Measured in euros

    Not in messages or clicks. Every report shows what it brought in.

  2. 02

    You stay in control

    The assistant follows up and books visits. Every real conversation stays with you.

  3. 03

    Honest with your customers

    Always says it's an assistant. Always a STOP option. Never anyone who didn't give permission.

  4. 04

    Works with what you have

    Your mailbox, your calendar, your quote software. No new system to learn.

The bubble vial of a steel spirit level, sharply in focus.

Why we do only one thing

We do one thing: follow up quotes. That way it gets better every month, for every client.

Questions? Email info@thedatakey.co. You'll get an answer from the founder, Tom Koentjes.

The cost behind digital work

Every piece of digital work runs on something physical: data centres that use more electricity every year.

That infrastructure powers our work too. We think the right response isn't to step away from better tools — it's to make sure the business built on top of them puts something back.

Harness the Wind

5% of our net profit funds renewable energy and environmental work around the world

Starting from our first full quarter of paid subscriptions, The Data Key commits 5% of net profit — not revenue we haven't earned yet, the actual profit — to Harness the Wind, our own small program for funding real environmental and renewable energy work.

We donate directly to a recognised Belgian environmental foundation rather than running our own fund. That means the money goes to work faster, and it means every euro is independently accounted for by an organisation whose entire purpose is this work — not managed by us.

We'll publish the number once a year, here on this page. Not because it's large — it isn't yet — but because a business that talks about data and numbers to its clients should hold itself to the same standard.

And this is a starting point, not the finish line. As The Data Key grows, we intend to build out more sustainability solutions — widening what Harness the Wind funds and finding new ways to make the work we automate lighter on the world it runs on.

What are your quiet quotes worth?