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In developmentTarget: Q3 2026

WhatsApp Business integration

Construction in Singapore runs on WhatsApp. Send quotation portal links and invoice PDFs to your clients on the platform they already use, with delivery and read receipts logged back in Zeng Book.

What it will do

  • Send quotation portal links via WhatsApp template messages
  • Attach invoice PDFs to existing message threads
  • Delivery + read receipts logged to the Zeng Book activity log
  • Per-project WhatsApp threads (planned)
  • Uses WhatsApp Cloud API — requires a Meta Business account

Get early access

We'll email you the moment WhatsApp Business goes live. One email, no marketing list.

We'll email you once — when this integration ships. No marketing list.

In the meantime

Use the REST API to pull quotation portal links and send them manually via the WhatsApp web client.

Building your own integration on top of the REST API? See the API reference or set up webhooks.

Zeng Book

AI bookkeeping for Singapore project teams. Capture receipts, match statements, and keep GST-ready records with source evidence attached.

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