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Zellbox
WhatsApp reminders + Google Calendar for appointment SMBs
Zellbox brings WhatsApp Business, Google Calendar and Gmail into one shared inbox for appointment-driven teams: clinics, salons, field sales, home services. Automatic WhatsApp reminders cut no-shows, visits sync two-way with Google Calendar, and every reply lands on the customer record. Official Meta Cloud API with Coexistence (keep WhatsApp on your phone), pre-approved templates, no per-seat pricing. Free plan, live in 5 minutes.
Hi Product Hunt! I'm Nacho, founder of Zellbox.
We built Zellbox after watching clinics and service teams juggle three browser tabs all day: Google Calendar for visits, WhatsApp Business on someone's personal phone, and Gmail for everything else. Reminders were sent by hand, no-shows piled up, and customer history lived in scattered chats.
Zellbox puts it all in one place:
- Automatic WhatsApp reminders (24h, 2h, post-visit) on Meta's official Cloud API
- Two-way Google Calendar sync and Gmail sending from your own address
- One shared inbox per customer: WhatsApp + email together
- Meta Coexistence: keep using WhatsApp Business on your phone, same number, same history
- No per-seat pricing, free plan, setup in about 5 minutes
If you're using Callbell, WATI or a spreadsheet + WhatsApp today, we'd love to hear what you'd need to switch. Happy to answer any questions!
About Zellbox on Product Hunt
“WhatsApp reminders + Google Calendar for appointment SMBs”
Zellbox was submitted on Product Hunt and earned 9 upvotes and 1 comments, placing #39 on the daily leaderboard. Zellbox brings WhatsApp Business, Google Calendar and Gmail into one shared inbox for appointment-driven teams: clinics, salons, field sales, home services. Automatic WhatsApp reminders cut no-shows, visits sync two-way with Google Calendar, and every reply lands on the customer record. Official Meta Cloud API with Coexistence (keep WhatsApp on your phone), pre-approved templates, no per-seat pricing. Free plan, live in 5 minutes.
On the analytics side, Zellbox competes within Messaging, Customer Communication and CRM — topics that collectively have 67k followers on Product Hunt. The dashboard above tracks how Zellbox performed against the three products that launched closest to it on the same day.
Who hunted Zellbox?
Zellbox was hunted by Nacho Coll. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Zellbox including community comment highlights and product details, visit the product overview.
Nacho Coll