About CustomJS
CustomJS is a code-first automation platform that lets developers write custom JavaScript functions to extend business applications. Teams can build tailored automations for sending emails, generating PDFs, updating CRM records, or executing any custom logic without leaving their existing tech stack.
Saysimple customers use CustomJS to build sophisticated automations triggered by incoming WhatsApp messages, chat events, or team inbox actions. Route conversations intelligently, sync customer data to external systems in real-time, generate dynamic documents on demand, or execute backend workflows—all with custom logic that fits your exact business process.
Popular use cases
Sync WhatsApp Inquiries to External Systems
When a customer sends a WhatsApp message to your Saysimple inbox, automatically extract key data (name, order ID, request type) and push it to your ERP, inventory system, or custom database using a CustomJS function. Eliminate manual data entry and ensure every inquiry is logged instantly in your source of truth.
Generate and Send Dynamic Documents on Demand
A customer requests a quote or invoice via WhatsApp. Trigger a CustomJS function that generates a personalized PDF using their conversation data, then automatically email or send it back through Saysimple. Deliver professional, branded documents without leaving your messaging inbox.
Conditional Routing Based on Message Content
Use CustomJS to analyze incoming WhatsApp messages and automatically route them to the right team, department, or external system based on keywords, sentiment, or custom rules. A logistics inquiry goes to operations; a billing question goes to accounting—all automated and logged in Saysimple for visibility.
Real-Time CRM Enrichment from WhatsApp Conversations
Every time a customer messages through WhatsApp, a CustomJS function runs to fetch their profile from your CRM, append conversation context, and update their record with the latest interaction. Your sales and support teams always see the full customer story without switching tools.
