LeadsFAQ2 min readUpdated 2026-03-12

FAQ: What happens if the same person is referred twice?

Q: How duplicate detection works

Duplicate detection is based on email address and is scoped to each campaign individually. When a new lead is added to a campaign — whether through a referral link, manual entry, or an integration — Referral Factory checks whether that email already exists in that campaign. If it does, the new entry is rejected and the original referrer keeps the credit .

Q: What this means in practice

Here are the most common scenarios:

Q: CRM duplicate handling

When syncing leads to an external CRM (such as HubSpot or Intercom), duplicate handling depends on the integration settings. Some integrations let you choose whether to update existing contacts or skip them. See How does Referral Factory handle duplicate contacts in Intercom? for a CRM-specific example.