Bitrix24 Lead to WhatsApp Auto-Reply n8n Workflow with WASync

Turn new Bitrix24 leads into instant WhatsApp welcome messages (automatically)

This n8n workflow listens for new Bitrix24 CRM leads and immediately sends a personalized WhatsApp welcome reply to the lead—using the WASync API from your own WhatsApp number. No Meta Business account required, just connect a number in WASync and go.

What this workflow does

• Receives a webhook from Bitrix24 when a new CRM lead is created (ONCRMLEADADD).
• Calls the Bitrix24 REST API to fetch full lead details using the lead ID included in the webhook payload.
• Checks for available phone numbers in the lead record.
• Sends a personalized WhatsApp message to the lead’s first phone number via the WASync messages API.

Messages can include any lead fields you choose (e.g., source, product, assigned manager) by editing the text in the workflow’s Send WhatsApp welcome node.

Use cases

• Instant lead response: greet every new Bitrix24 lead with a WhatsApp welcome message within seconds.
• Lead source personalization: add an If node to send different messages based on lead source.
• Sales support follow-up: quickly confirm receipt and share next steps to improve conversion rates.

Technical details

• n8n workflow type: n8n automation workflow using nodes such as webhook, http request, set, and if.
• Bitrix24 integration: inbound webhook for ONCRMLEADADD and a REST API call to retrieve lead details.
• WASync integration: HTTP request using an API key with whatsapp.send scope (Authorization header: Bearer <key>).

Setup (high level)

• Create a WASync API key and configure it in n8n as the HTTP Header Auth credential named WASync API key.
• Create a Bitrix24 outbound webhook for ONCRMLEADADD pointing to this workflow webhook URL.
• Update settings: Bitrix24 portal URL, Bitrix24 inbound webhook token, company name, and your WASync connectionId.

If you want a short delay, you can add a Wait node before sending.