Here's the video tutorial for building WhatsApp and SMS CRM app. This app can let you send WhatsApp messages and SMS directly to your customers.
- ToolJet (https://github.com/ToolJet/ToolJet): It is a free and open-source, low-code platform that allows you to quickly build tools. Sign-in here
- Google Sheets: Use this mock data
- Twilio account with an active messaging service
- WhatsApp's click to chat API endpoint: https://api.whatsapp.com/send?phone=phonenumber&text=message