Laying out the streets…STEP 1 OF 3

Zellbox · House #31,640

WhatsApp reminders + Google Calendar for appointment SMBs

In the Bookings and missed calls neighborhood (Work and office). In town since 5 Oct 2026.

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What Tablif read on Zellbox's site

Zellbox describes itself as: “WhatsApp reminders for Google Calendar visits — Zellbox”

What it is

Calls itself “shared inbox”.

  • Calls itself: shared inbox
“Zellbox brings WhatsApp Business, Google Calendar and Gmail into one shared inbox for appointment-driven teams”

Where it puts itself

Claims “One app for visits, conversations, and email”. Rules out “no newsletter” and “no resale”.

  • Superlative claim: One app for visits, conversations, and email
  • Says it will not: no newsletter · no resale
“A spreadsheet doesn't fire reminders automatically, doesn't track delivery, doesn't route replies to the right operator, and doesn't scale past a few dozen customers.”
“One app for visits, conversations, and email — replacing the three browser tabs your team juggles today.”

What it costs

Monthly subscription. A free tier, free forever. Trial: “The free tier itself is the trial”. Has an enterprise plan. Sales on request. No yearly plan. 4 prices listed on its pages, from $0 to $299.

  • Monthly: yes
  • Yearly: no
  • Free plan: free forever
  • Price: 4 prices, from $0 to $299
  • Trial: The free tier itself is the trial
  • Enterprise plan: yes
  • Contact sales: yes
“Starter $0 Free forever — for evaluating Zellbox”
“Pro $29 / mo For growing teams”

Who it sells to

Sells to businesses. Built for small businesses. Made for Plumbers, cleaning and electricians. In English.

  • Sells to: businesses
  • Company size: small businesses
  • Made for: Plumbers · cleaning · electricians
  • Languages: English
“WhatsApp Business + Google Calendar for appointment-driven SMBs.”
“Plumbers, electricians, HVAC, cleaning.”

How it runs

A web app. Hosted in the cloud. Offers an API.

  • Kind: web
  • Runs where: cloud / hosted
  • API: yes
“Zellbox brings WhatsApp Business, Google Calendar and Gmail into one shared inbox”
“We use European host providers for customer data where required”

What it works with

Built on Meta Cloud API. Names Gmail, Google CASA and 2 more on its pages.

  • Built on: Meta Cloud API
  • Names: Gmail · Google CASA · Google Calendar · +1
“Zellbox brings WhatsApp Business, Google Calendar and Gmail into one shared inbox”
“Google CASA Tier 2 certified”

What it offers as proof

Live, no waitlist. Compliance: GDPR. Try it without signing up. Publishes docs and a blog.

  • Compliance: GDPR
  • Instant signup: yes
  • Trial asks for: nothing
“Start free — no card required”
“Acme Clinic”

Sources

Tablif read these pages, last on 5 Oct 2026. Everything above is what the product says about itself; Tablif does not verify every claim.

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