Skip to content

Does OutboundSync convert leads in Salesforce?

When to use this guide: Use this guide when Leads are converting to Opportunities in bulk, or when you suspect OutboundSync triggered Lead conversion, merge, or Opportunity creation.

No. OutboundSync does not convert Leads to Contacts, Accounts, or Opportunities, and it does not create Opportunity records.

What OutboundSync does write

Section titled “What OutboundSync does write”

For Lead-object webhooks, OutboundSync:

  1. Looks up an existing Lead by email, social profile URL, or your configured lookup fields.
  2. Creates a new Lead (Upsert mode only) with basic fields — name, email, company, and optional phone or website — when no match exists.
  3. Writes activity as a Task or EmailMessage linked to the Lead, Contact, or Account.
  4. Backfills empty standard fields on existing records without overwriting populated values.

When a Lead has already been converted in Salesforce (IsConverted = true), OutboundSync routes activity to the existing Contact and Account. It does not run a Lead convert API call.

What OutboundSync does not change

Section titled “What OutboundSync does not change”
  • Lead-to-Contact, Lead-to-Account, or Lead-to-Opportunity conversion
  • Opportunity creation or updates
  • Account or Contact field values on existing converted records (beyond writing activity and optional empty-field backfill)

See Which Salesforce fields are updated for the full scope.

If you see unexplained conversions

Section titled “If you see unexplained conversions”

Bulk Lead-to-Opportunity conversions that appear around the same time as outbound activity are usually caused by Salesforce-side automation — Flows, Process Builder, Apex triggers, or duplicate-management rules — not by OutboundSync API calls.

Check in Salesforce:

  • Active Flows and Processes on Lead, Contact, or Opportunity
  • Lead conversion settings and duplicate rules
  • Created By and Last Modified By on affected Opportunities to see which user or integration performed the change

Use Identifying OutboundSync activity in Salesforce to confirm whether OutboundSync wrote the related Tasks or Leads.

If conversions persist after ruling OutboundSync out, open a case with Salesforce Support with example Opportunity IDs and timestamps.

Section titled “Related guides”