Keaworld, banking and crypto payments for businesses · the sales and marketing team · Head of AI on contract · early 2026
A new conference becomes a trusted call list in two days, at a twentieth of the old cost per contact.

The company sells at fintech conferences: thousands of attendees, a few hundred of them worth a call. Attendee lists came from a paid data service, and a person went through the rows by hand deciding who fits, with three vague categories and no order of priority. Nobody could say whether the service's data was right. Finding the duplicates in a new batch took half an hour of someone's time every time, and the useful part of a list was usually ready after the conference, not before it.
What I decided. I did not hand the question “is this our customer” to a model. Marketing and I wrote the selection rule down: which roles, which kinds of company, which countries count, and how much each weighs. The system scores every attendee by that rule the same way every time; the model is used only to fill a gap on a card, such as finding a profile the data service missed, and it is told that not finding one is better than finding the wrong one. Outreach runs in two channels from the same list, and what comes back, replies and questions, feeds the rule before the next conference. Nine conferences went through it this way.
What changed. From about $2 to about $0.10 per contact · a new conference list turned into a ready call list in two days · about one message in three got a reply, and about one contact in forty became a hot lead.
Everything it took over
- Two outreach channels from one list: messaging active, email built and warmed, ready to launch.
- Replies and the questions people ask are collected and fed back into the selection rule.
- Every new list is checked against the company's whole base first, so nobody pays to complete a contact the company already had.
- On one conference list more than a quarter of the names turned out to be known already.
- Every attendee is scored by the written rule and sorted by priority.
- Duplicates are found by a script instead of half an hour by hand per batch.
- The base is checked automatically before every send, with a backup taken first.
- Profiles the data service could not find were found for four in ten of the missing ones.
- Sales gets one ready call list per conference, not the raw attendee list.
- People who said no or unsubscribed are never written to again.
- The date of every send is kept, so a contact is not approached twice too soon.
Safe to rely on. The rule that decides is written down and agreed with marketing, not guessed by a model. Every list is checked automatically before a salesperson sees it. A refusal is final: the contact leaves every future list.
Sales · Marketing and content














