Leads are unique per workspace and email address.
During import
Duplicates inside the file are collapsed to the first occurrence. Addresses already in the workspace are reported and skipped rather than duplicated.
Over the API
POST /contacts with an existing address updates that record instead of creating a second one.
Across lists
The same lead in two lists is still one lead. Adding both lists to one campaign will not email them twice.
Common problems
- The same person on two addresses — MunchReach cannot know these are the same human. De-duplicate by person in your source data if that matters to you.
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