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Hi,
We have enabled email deduplication in Customer Insights Journeys, but we have duplicate data and contacts sharing the same email address are still receiving both A and B emails in our A/B testing journey.
It looks like a known issue where deduplication prevents sending an email more than once to the same address, but it doesn't exclude other contacts sharing that email from the journey logic.
How can we ensure that the same email address only receives one version of the test, even if two contacts share it?
Many thanks in advance!
Hi, Thanks for the insight! I’ll try adding the duplicate contacts to the suppression list while we continue cleaning up the data, though that process will take some time.
It looks like the deduplication in Customer Insights Journeys is based on contact ID, which is why contacts sharing the same email but with different IDs receive both A and B emails in the A/B test. The documentation supports this: https://learn.microsoft.com/en-us/dynamics365/customer-insights/journeys/email-deduplication. It prevents sending multiple emails to the same address, but doesn’t handle shared emails in the journey logic.
In my case, the issue arises during A/B testing.
Under review
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