Push interested replies to Salesforce with n8n or Zapier

When a reply is labeled Interested, a webhook sends the lead, company, reply and thread link to n8n or Zapier, which creates or updates the Salesforce lead, sets the status and owner and logs the email chain.

CRM sync

Salesforce

n8n

ZapierRevOpsRevenue plan

When

Add LabelInterested or Meeting request

Then

Send a webhookSend name, email, company, labels, reply text and thread URL to n8n or Zapier, which upserts the Salesforce lead and logs the activity

Why teams run it

Positives reach Salesforce with owner and status set, without a rep copying them in or holding an extra seat.

Set it up in Master Inbox

In Master Inbox, open Settings, then Workflows, and click Add a workflow.
Name it Push interested replies to Salesforce with n8n or Zapier.
Set the trigger to Add Label and choose Interested or Meeting request.
Add the action Send a webhook: Send name, email, company, labels, reply text and thread URL to n8n or Zapier, which upserts the Salesforce lead and logs the activity.
Save the workflow and switch it to Active.

Or create it with the API

Everything in the workflow builder is also in the Master Inbox API. This request creates the same workflow. Replace the example ids with your own label, list and campaign ids from GET /workflows/filter-fields.

curl -X POST https://api.masterinbox.com/api/api-webhook/v1/api/workflows/create-workflow \
  -H "Authorization: Bearer $MASTER_INBOX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "name": "Push interested replies to Salesforce with n8n or Zapier",
  "trigger_type": "add_label",
  "trigger_config": {
    "label_ids": [
      176479
    ]
  },
  "action_configs": [
    {
      "action_type": "webhook",
      "webhook_url": "https://hooks.example.com/master-inbox",
      "webhook_payload_variables": [
        "name",
        "email",
        "company_name",
        "label_names",
        "thread_url",
        "text"
      ]
    }
  ]
}'

Full reference: workflow API guide and API docs.

Or ask Claude, ChatGPT or Grok to build it

Our workflow guide is written for AI agents to read. Give your assistant your API key and this prompt:

Read https://app.masterinbox.com/public-workflow-api.md and use my Master Inbox API key to create this workflow: "Push interested replies to Salesforce with n8n or Zapier". First call GET /workflows/filter-fields and look up my label, list and channel ids, then create the workflow and tell me what you set up.

Questions

Is there a native Salesforce sync?

The Salesforce integration is in beta under Settings, Integrations. The webhook route works today for any object and field you choose.

Can I send custom fields?

Yes. Custom fields from your sequencer or Clay are in the payload, ready to map in n8n or Zapier.

Can I build this workflow through the API?

Yes. Send the create-workflow request shown on this page with your Master Inbox API key. The API checks the payload first and lists every problem by field if anything is off.

Which plan includes this?

This workflow works on the Revenue plan. Every plan has unlimited users and starts with a free 7-day POC.