Zellbox Blog
Insights and updates from the Zellbox team — appointment reminders, WhatsApp Business automation, and how clinics, salons, sales teams, and home services keep customer conversations in one place.
Trengo alternative for appointment-driven small businesses
Trengo is a multi-channel helpdesk built for support teams and e-commerce. Zellbox is WhatsApp + Google Calendar for appointment-driven small businesses. Honest verdict on when to pick each.
Nacho Coll 4 min read
Spa pre-care + post-care WhatsApp templates for repeat bookings
Six pre-care + post-care WhatsApp templates per treatment type (deep tissue, lymphatic, laser, holistic, facial, body wrap). Treatment-specific so the customer reads the message instead of swiping past.
Nacho Coll 7 min read
WhatsApp for Mental-Health Practices: The Confidentiality Checklist Regulators Open First
A confidentiality checklist for psychology and therapy practices on WhatsApp: template content rules, consent shape, shared-phone risk, and the no-show protocol regulators check first.
Nacho Coll 6 min read
Vet vaccination recall: postal mail costs more than WhatsApp
Postal mail, email, SMS, and WhatsApp compared for a 1,200-pet veterinary practice: annual cost, response rate, and no-show rate for vaccination recalls.
Nacho Coll 10 min read
Kommo vs Callbell: An Honest 2026 Third-Party Comparison
Kommo is a WhatsApp-first CRM ($15-45/user). Callbell is a multi-channel inbox ($15-20/user + modules). Neither is us. Real prices, real fits, honest verdict.
Nacho Coll 4 min read
Best WhatsApp signed-consent tools in 2026: GDPR-ready send-and-sign
Sending a consent PDF via WhatsApp, having the customer sign on their phone, and storing the signed file on the customer record — with an audit trail — is a narrow feature. Six tools that actually do it.
Nacho Coll 9 min read
Best WhatsApp CRM for dental clinics in 2026: 8 tools compared
Eight tools dental clinics actually evaluate for WhatsApp reminders, recall, and patient records. What fits UK/EU/LATAM/APAC dental SMBs — and what the US-only players miss.
Nacho Coll 11 min read
Best WhatsApp Appointment Reminder Tools 2026: Compared
Nine tools promise WhatsApp appointment reminders. We tested which ones auto-send from your calendar and which need Zapier duct-tape. Verdict + table inside.
Nacho Coll 11 min read
Respond.io vs Zellbox: enterprise-scale AI inbox or appointment-first SMB CRM?
Respond.io is an enterprise-grade multi-channel AI inbox (Toyota, McDonald's). Zellbox is WhatsApp + Google Calendar for appointment-driven SMBs. Real prices, honest verdict.
Nacho Coll 10 min read