Classic time-window management fails because the driver never receives the slot confirmation. With WhatsApp it works — GDPR-compliant and in 24+ languages.
What you’ll learn in this guide
- Why classic slot platforms don’t resolve the truck queue at the plant gate
- How WhatsApp as a layer finally gets the slot information to the driver — GDPR-compliant
- Three architecture options: standalone, integrated, all-in
- Realistic cost calculation: WhatsApp integration + Heylog licence
The slot never reaches the driver
Definition · The usual chain
Shipper → Slot software → Haulier (Dispatcher) → …Gap… → Driver in HGV
The dispatcher calls at midday; the driver has been on the road since 5 a.m. and doesn’t hear the phone. Result: slot lost, queue at the gate.
Most slot solutions solve the booking problem perfectly — but not the delivery problem to the driver.
Three reasons why WhatsApp is the right channel
Reachability
99 % of HGV drivers across Europe use WhatsApp daily — the only channel that truly lands.
No app installation
No onboarding burden on the haulier, no “doesn’t work on my old phone” problem.
Multilingual
Slot confirmation and safety briefing automatically in the driver’s language.
But is WhatsApp GDPR-compliant?
Yes — if you use the official WhatsApp Business Platform (not the app!) with documented consent and a Data Processing Agreement. That’s exactly what Heylog provides.
- WhatsApp Business Platform (Meta Cloud API) rather than the consumer app
- Documented opt-in confirmation for each driver via first-contact message
- Data Processing Agreement (DPA) between plant, Heylog and Meta Ireland
- No more data being stored on private dispatcher mobile phones
What does the architecture look like? Three options
| Option | Approach | Effort | Suitable for |
|---|---|---|---|
| 1. Standalone | Keep existing slot software + Heylog for driver communication | Low | Quick ROI with existing slot software in place |
| 2. Integrated | Slot + WhatsApp from a single platform | Medium | Plants without existing slot solution |
| 3. Heylog complete | Slot + WhatsApp + Safety briefing + Yard control | Medium | Mid-market 30–200 HGV/day |
Traditional
Slot platform alone
Hauliers book slots — but the information only reaches the driver via the dispatcher. In practice: slot confirmation arrives too late or not at all; driver still parks in the wrong place at the gate.
Modern
Slot platform + WhatsApp layer
Slot confirmation goes directly to the driver, in their language, with read receipt. The plant manager sees which slots are confirmed in the live dashboard.
What does WhatsApp integration cost?
| Item | Cost | Note |
|---|---|---|
| WhatsApp Business Platform | €0.01–0.07 / message | Country-dependent, billed by Meta |
| 100 HGV/day × 4 messages | ~€30–80 / month | Registration, slot, dock, safety briefing |
| Heylog software licence | from €350 / month | Mid-market plants (50–200 HGV/day) |
Usually payback in the first quarter through reduced dwell time. You don’t have to replace your existing slot software — Heylog hooks in via webhook.
The five categories in the market — and where Heylog stands
Yard and time-window solutions in the DACH market fall into five categories. Each solves part of the puzzle — none except Heylog addresses the bottleneck: direct, multilingual communication with the driver in the HGV.
| Category | Strength | Bottleneck |
|---|---|---|
| Classic enterprise yard suite On-premise, large industry | Deep functional integration, AI optimisation | Six-figure implementation, 6–18 months, no native driver channel |
| Slot-booking platform Marketplace for hauliers | Established, many users, simple slot booking | Slot confirmation never reaches the driver — stays with dispatcher |
| WMS yard control module Yard as warehouse add-on | Integration with warehouse process | Yard function is a bonus, not core; driver unreachable |
| Self-check-in kiosk Terminal at plant gate | Works even without smartphone | High hardware costs, maintenance, vandalism, no mobile slot info |
| Heylog WhatsApp-first, smartphone-only | Reaches every driver in their language, no app, no hardware. Live in weeks. | Smartphone requirement (in practice < 1 % exceptions) |