The average B2B salesperson spends close to a quarter of their working week switching between tools — CRM updates, email follow-ups, calendar bookings, proposal drafts. Each switch costs a few minutes and a lot of mental momentum. Kaissa.nl is built on the premise that the best tool is the one you already have open: WhatsApp.
WhatsApp has a 98% open rate. Most professionals in the Netherlands and across Europe read WhatsApp messages within minutes. Contrast that with email — which hovers around 20% open rates on a good day — and the case for WhatsApp-first outreach becomes clear. Kaissa.nl does not ask you to change how clients communicate with you. It meets you where you already are.
The Kaissa.nl business number (+31 6 84727713) acts as your lead management interface. When a new lead comes in through your website or a referral, a record is created automatically and you receive a WhatsApp summary: who they are, how they found you, and what they appear to need based on any intake data captured.
Kaissa.nl exposes your lead pipeline through a set of WhatsApp commands you can run from anywhere:
These commands are intentionally minimal. The goal is not to replicate a full CRM on WhatsApp — it is to give you the 80% of actions you perform daily without requiring you to open a browser.
When you do need the full dashboard, Kaissa.nl sends a one-tap login link in the same WhatsApp thread. No username, no password, no 2FA app. The link is time-limited (24 hours) and single-use — generated specifically for your phone number and encrypted before it leaves the server. You tap it, and you are in.
This matters because the single biggest friction in B2B tool adoption is authentication. If logging in requires more than one tap, most salespeople will not bother. Kaissa.nl removes that friction entirely for WhatsApp users.
When you pass a lead's website URL to Kaissa.nl — either through the WhatsApp command or the dashboard — the platform crawls the site and enriches the lead record automatically. You get a summary of what the business does, what they appear to be missing, and what services are most likely to resonate. This enrichment happens before you make the first call, so you go in with context.
The same crawl feeds directly into proposal generation. From enriched lead to sent proposal can be as short as ten minutes end-to-end.
Kaissa.nl sends WhatsApp notifications at the moments that matter — not a daily digest you will ignore, but targeted pushes:
Each notification is actionable. You can respond, trigger the next step, or dismiss — all from the same thread.
Kaissa.nl is not trying to replace Salesforce or HubSpot for enterprises with complex pipeline requirements. It is designed for freelancers, small agencies, and solo consultants who need something that works on day one without a week of onboarding. The data lives in MongoDB, there is a REST API for every object, and if you ever need to pull lead or proposal data into a larger system, the GET /api/leads and GET /api/proposals endpoints are available to authenticated users.
The bet Kaissa.nl makes is that most B2B service businesses do not need more complexity — they need less. WhatsApp-first is not a limitation. It is a design choice.