CphML An applied AI and Machine Learning Company
Direct Mail Model · Dansk Røde Kors · Live v01 / 2026

Contact the
people who will
actually say yes.

We score every contact in your next campaign with a gradient-boosted model - so your direct mail and outreach budget only goes to the audience most likely to respond. Same revenue, a fraction of the spend.

Cutting edge Machine learning
We always employ the best modelling techniques to your data structure
Tele marketing / Web / Postal / Direct sales
Any channel where you control who receives.
Live model
Currently running with Dansk Røde Kors donor campaigns.
CPH
Based in the Innovation Disctrict in Copenhagen. EU Standards for data handling.
§ 01 - Process

A score, a threshold,
a smaller print run.

1 DATA
contact_id recency freq monetary channel d_8841 12 6 1.240 post d_3019 240 1 200 post d_9903 31 14 3.400 email d_2287 410 2 450 post

We ingest your data.

Existing customer or donor records - purchase history, engagement signals, demographics - cleaned and assembled into a feature set we can train on. SFTP, CSV, or warehouse export.

zero engineering on your side
2 MODEL

We train a classifier.

An XGBoost model fits on your historical conversions. Output: a probability score for every contact in your next campaign audience. We share feature importance so the model isn't a black box.

XGBoost · cross-validated · explainable
3 TARGETING
τ

You send to the top slice.

Pick a threshold based on your CPM and expected conversion. Mail or serve ads only above the cut-off. Same fundraising or revenue, fraction of the print, postage, or media spend.

Decide the slice that fits your economics
§ 02 - Who it's for

Anyone running volume
campaigns where every contact
has a cost.

If you're paying per recipient - postage, print, ad impressions, calls - and most of them don't convert, scoring before you spend pays for itself in the first send.

NGO fundraising

Donor mail-outs, newsletters, recurring-gift upgrades. Cut volume without cutting yield.

DONOR APPEALS · LOTTERY · TESTAMENTAL

Retail & loyalty

Catalogues, win-back coupons, churn campaigns. Predict the customers worth reactivating.

CATALOGUE · WIN-BACK · CRM

Political campaigns

Door-knock priorities, persuadable-voter mail, GOTV cohorts. Same field budget, more contacts that matter.

DIRECT MAIL · CANVASSING · GOTV

Subscriptions

Renewal letters, retention offers, free-trial conversions. Spend on the segment that's actually on the fence.

RENEWAL · RETENTION · TRIAL
§ 03 - Live pilot

First in production:
a humanitarian one.

PILOT ONGOING · 2026

Optimising donor campaigns for Dansk Røde Kors.

By scoring their donor base before each send, we identify which contacts are unlikely to donate in a given cycle - reducing print and postage costs without reducing fundraising yield. Same approach generalises to any organisation running volume campaigns.

Dansk Røde Kors
National humanitarian org · est. 1876

Direct maildonor appeals
Scorebefore send
Outcomevolume ↓ yield =
§ 05 - Get started

Ready to stop paying for contacts who won't respond?

Tell us about your campaign volume and the data you already have. We'll scope a pilot in one call.

info@cphml.com