Our story

Most bookings are lost before anyone says hello.

"The phone rang.
Nobody picked up.
Your customer booked somewhere else."
What actually happens

The problem was never the business — it was the channel. It plays out thousands of times a day across restaurants, salons, clinics, gyms, and rentals: customers don't leave a voicemail or send an email; they move on in seconds. ZathosAI replaces that missed call with a reply that's instant, automatic, and never off-duty — in whatever language they write in.

The cost of being unreachable

Customers don't complain
when they can't reach you.
They just leave.

62%
Won't try again
Of callers who don't reach a business on the first attempt simply move on. No voicemail. No callback.
1 line
One chance per caller
When one customer is on the phone, every other caller gets a busy signal. There's no queue. They just leave.
90–96%
WhatsApp penetration across Europe
Spain 92 · Italy 90 · Germany 96 · Switzerland 96 · Netherlands 93 · UK 94 · Portugal 91 · Austria 94. Your customers are already there.
What ZathosAI does

One system that replaces the phone line, the inbox, the 20% email open rates, and the follow-up.

Most service businesses handle bookings through a patchwork of phone calls, WhatsApp messages, Instagram DMs, and email — each one needing someone to watch, respond, and follow up by hand. ZathosAI collapses all of it into a single automated conversation.

When a customer messages — at 9am on a Tuesday or 11pm on a Saturday, in English, Spanish, Arabic, or German — ZathosAI replies instantly: it answers their questions, checks your availability, books the appointment, confirms the details, sends a reminder, and follows up afterward. Without anyone on your team involved.

That's not just efficiency. It's the difference between a business that captures every enquiry and one that loses half of them to missed calls and slow replies.

And it all runs on WhatsApp — the channel your customers already live in every day. You're not asking anyone to download something new or learn another tool; you're simply answering them where they already are.

Available when staff aren't
Customers message at 11pm, during lunch, on Sundays, and while your team is busy serving others. ZathosAI replies instantly every time.
Built around your business
Opening hours, staff schedules, services, buffers, booking limits, blackout dates — every rule is enforced automatically.
Customers stay on WhatsApp
No apps to download. No portals to log into. Customers book through the same channel they already use every day.
Every enquiry gets tracked
No missed messages. No forgotten follow-ups. Every conversation is recorded and every booking is accounted for.
Gets better over time
We monitor conversations during the pilot and continuously improve flows based on real customer behaviour.
Common questions
What if some customers don't have WhatsApp?
Customers can still call, email, or reach you however they normally do. WhatsApp simply becomes the main channel for new enquiries, because it's where most people already prefer to message. You can also set a voicemail that points missed calls straight to WhatsApp — so a call no one can pick up instantly becomes a booking conversation instead of a lost customer.
Do I need to replace my current setup?
No. ZathosAI sits on top of what you already use. We start simple and integrate deeper as needed — Google Calendar, Sheets, your CRM. The 14-day guided pilot runs without disrupting anything.
How long does setup take?
Most pilots are configured within a few days. We handle the setup, connect your systems if needed, and make sure everything is working before customers start using it.
What happens during the 14-day guided pilot?
We configure the system, monitor performance, and optimise it alongside your team. You only decide whether to continue after you've seen the results in your own business.
The team

Two founders.
One problem we refused to ignore.

We didn't start with a technology idea. We started by watching a clinic in Barcelona lose three bookings in one afternoon — all to an unanswered phone. That became the starting point.

Rafael Alexander Veit
Rafael Alexander Veit
ESADE Business School, Barcelona

Rafael leads software development and AI implementation at ZathosAI. He focuses on building the systems that power customer conversations, automate bookings, and ensure reliable performance at scale. His goal is simple: create automation that feels natural to customers and effortless for businesses.

Victor de Paula Sousa
Victor de Paula Sousa
London School of Economics and Political Science (LSE)

Victor leads product architecture, system design, and user experience at ZathosAI. He focuses on how the platform is structured, how businesses interact with it, and how automation fits seamlessly into existing operations. His approach is to build technology that solves problems without adding complexity.

We are early stage and we intend to stay close to every customer we work with. Every pilot is configured by us personally. Every issue gets a same-day response. We're not building a faceless SaaS — we're building a tool we'd want to use ourselves.

Stop losing bookings
to unanswered calls.

Start a 14-day guided pilot. We configure everything and handle real WhatsApp enquiries, so you see the results — bookings made, admin saved, response times — before committing to anything.

Start your pilot No commitment — we set it up, you approve