This answer comes from the Interconnected community forum. 👌
I have duplicates of some users, all with the same email address. How did this happen? How can I fix it?
If you have multiple customers in your Intercom workspace with the same email address, it may be because you’re passing a different user_ID for each one.
When you define both an email address and user_ID for a user, Intercom uses the user_ID as a unique identifier.
For example, if you have two users, both with the email address email@example.com, but they have different user_IDs, Intercom will recognise these customers as two unique users.
While you can’t merge duplicate user profiles, you can clean these up. 👇