Include country code for WhatsApp links, e.g. +55 11 99999-9999
Google Integration Setup
Gmail
Google Contacts
1. Go to Google Cloud Console → Credentials
2. Create an OAuth 2.0 Web Application client
3. Under Authorized JavaScript origins add
4. Leave Authorized redirect URIs completely empty
5. Enable Gmail API and People API in your project
6. Paste the Client ID above and click Connect — a popup will appear