Blog

Notes on reaching your staff

How staffing agencies actually reach their flex pool: research, practice and product notes from the Boomer team.
Can you message your staff on WhatsApp? What the GDPR allows
Guide

Can you message your staff on WhatsApp? What the GDPR allows

Messaging your flex pool is allowed, but consent is usually the wrong legal basis. What does work, and why that group chat is your biggest risk.
Tijn van Geel · 13 August 2026
WhatsApp gets more expensive on 1 October: what you can do
Guide

WhatsApp gets more expensive on 1 October: what you can do

The Netherlands is one of the most expensive countries for WhatsApp messages, and from 1 October 2026 your replies are no longer free. What it costs.
Tijn van Geel · 13 August 2026
Setting a PIN for your WhatsApp Business number: how to prevent a takeover
Guide

Setting a PIN for your WhatsApp Business number: how to prevent a takeover

Verification codes you did not request, or suddenly logged out? Someone is trying to take over your number. Here is how to switch on two-step verification.
Aron Heesakkers · 27 July 2026
Boomer vs. Trengo: which one fits how you use WhatsApp?
Comparison

Boomer vs. Trengo: which one fits how you use WhatsApp?

Trengo is an omnichannel customer service inbox. Boomer is built to reach and schedule your flex pool. How to pick the right one.
Aron Heesakkers · 26 June 2026
Getting WhatsApp Business for your flex pool: a step-by-step guide
Guide

Getting WhatsApp Business for your flex pool: a step-by-step guide

How do you get WhatsApp Business set up for hundreds or thousands of workers? The difference between the app and the platform, and how to start safely.
Aron Heesakkers · 25 June 2026
WhatsApp Business with multiple users: how to set it up
Guide

WhatsApp Business with multiple users: how to set it up

Can WhatsApp Business work with multiple users? Not with the free app, but it does on the platform. Here is how your whole team works on one number.
Aron Heesakkers · 24 June 2026
WhatsApp number blocked? Here is why, and how to prevent it
Guide

WhatsApp number blocked? Here is why, and how to prevent it

Your WhatsApp number is blocked and your flex pool is unreachable. Why it happens, what to do now, and how to stop it happening again.
Aron Heesakkers · 23 June 2026
WhatsApp Business templates: 7 examples for your flex pool
Guide

WhatsApp Business templates: 7 examples for your flex pool

What are WhatsApp Business templates and what do good ones look like? Seven templates for reaching your flex pool, plus Meta's rules.
Aron Heesakkers · 22 June 2026
Never losing your number: the engineering behind a channel that holds
Engineering

Never losing your number: the engineering behind a channel that holds

Four SIM cards and a private number is not an architecture, it is a delay. How to build a recruiting channel that stays standing at any volume.
Aron Heesakkers · 15 June 2026
How our AI knows what to answer
Engineering

How our AI knows what to answer

A language model knows everything about the world and nothing about your agency. The difference is the context you give it.
Aron Heesakkers · 20 May 2026
An AI that actually understands your workers
Engineering

An AI that actually understands your workers

A chatbot that only gives you text back is a toy. An agent that checks your schedule, books a shift and confirms it is a colleague. Here is how we built that.
Aron Heesakkers · 8 April 2026
How do you build a product that scales without buckling?
Vision

How do you build a product that scales without buckling?

How do you meet every customer request without losing sight of your vision? It is a question every growing software company wrestles with.
Tijn van Geel · 23 November 2025
Workers do not want an app, they want to message
Research

Workers do not want an app, they want to message

Contact with young workers only really works when it is human, personal and direct.
Floris Lugtmeijer · 14 October 2025
Hi Boomer!
Vision

Hi Boomer!

We all know how a good team feels: the communication takes care of itself. Personal contact motivates, and it is why someone goes the extra mile.
Floris Lugtmeijer · 4 October 2025