I have a Business Process that creates Leads based on incoming mails. The scenario that creates a problem is- Person- X recommends person- Y and sends a recommendation mail. Now receiving this Mail the BP creates a new Lead. Meanwhile person-Y sends a mail describing His needs, following which the BP gets triggered and creates a new Lead for this mail. Currently both the mail refers to Person-Y, and 2 leads are created for Person-Y. I need to avoid this duplicate Lead creation. I tried to use "Setup duplicate rules" option, but both mails have different names and email ID.
How to avoid this duplicates Lead creation?