About Zellbox
A CRM for businesses that live or die by the next appointment.
Zellbox is a shared inbox for the front desk of clinics, salons, vets, fisio, and aesthetics — where a quiet 15-25% no-show rate decides whether the month closes profitable. We bring WhatsApp Business, Gmail, and Google Calendar into one record per customer so a small team sees the full conversation without switching apps.
Who Zellbox is for
Verticals where the same person at the front desk handles WhatsApp, email, and scheduling — and where one missed reminder is a real financial event.
Health & care
Private clinics
The cancellation that costs €7,500 a month.
See sector landing →Dental practices
Recall-cycle hygiene that rebuilds the patient calendar every quarter.
See sector landing →Physiotherapy
€990/month lost to no-shows. 10-15% no-show rate as the steady state.
See sector landing →Mental health
Confidential 1:1 sessions where one missed reminder = €120 gone.
See sector landing →Aesthetic clinics
€2,500–7,500/month tickets. One cancellation breaks a 5-session bono.
See sector landing →Veterinary clinics
Annual vaccination + quarterly antiparasitic recall. 1-in-4 calls lost in the gap.
See sector landing →Wellness & beauty
Beauty + hair salons
Stylist-aware recall keeps the chair full and the regulars regular.
See sector landing →Barber shops
Walk-ins die; WhatsApp bookings stick. The math for a 4-chair shop.
See sector landing →Spas + wellness
Treatment inquiries → booked sessions, without the front-desk phone tag.
See sector landing →Fitness studios
The 10-class pack that renews itself before the customer notices it lapsed.
See sector landing →The team
Who builds Zellbox
Operated by Blockchain Web Services — a multi-discipline product, engineering, and operations team with a decade of SaaS shipping history.
Nacho Coll
Founder · read the full bio →
Zellbox is built by Nacho Coll (founder) and the product, engineering, and operations team at Blockchain Web Services, our parent company. Registered in Delaware (2055 Limestone Rd Ste 200C, Wilmington, DE 19808) and operated worldwide.
The group behind Zellbox has shipped SaaS for over a decade — cloud infrastructure, CRM, scheduling, and appointment-driven workflows are core to what we've built before. Zellbox is the most recent of several products operated by the same team.
Most in-app support messages still reach Nacho directly — he personally reads and replies to as many as he can. The support, engineering, integrations, and 24/7 reliability groups behind him keep every reply conversational instead of ticket-tracked.
Editorial standards
Why we wrote the content you're reading
Not for SEO breadth. The playbook we'd hand a clinic operator on day one — sourced, fact-checked, and signed by Nacho.
The Zellbox blog covers operational problems faced by visit-driven small businesses — no-shows, last-minute cancellations, vaccination recalls, consent recording. Each post proposes a workflow we've built into the product. We're not writing for SEO breadth; we're writing the playbook we'd hand a clinic operator on day one.
Posts are drafted with AI assistance for structure + outline, then rewritten, fact-checked, and edited by Nacho before shipping. We cite the source for every statistic. If you spot an error, please message us on LinkedIn and we'll fix it.
Try it on your front desk
The Starter plan is free forever (no card). Connect your WhatsApp Business number in 5 minutes, sync Google Calendar, and run real reminders by tonight.