Audience Exclusions: Non-identity Namespace

[JeffBa4]

How do I create a segment that excludes another audience joined on a field that is not an identity namespace (in our case, email address)? The current challenge is that audience builder is all denormalized or joined on the identity namespace.

For example, I have an audience of former customers that could have the same email address as active customer accounts. If I email the former customers, I need to exclude any email address that matches an active customer. 

Thank you in advance for any help. 

JeffBa4

[Anuhya-Y]

@JeffBa4 check out exclude by attribute https://experienceleague.adobe.com/en/docs/experience-platform/segmentation/ui/audience-composition#... 

[JeffBa4]

Hi Anuhya-Y, 
Thank you for the direction. 

After reviewing, it appears Exclude by attribute will allow me to exclude one single email address. 

I need the ability to remove users from an audience if the email address matches the email address in another, separate audience. 

Is Exclude by Attribute still what I need and I just misunderstood?
Or is there alternative options for me?
Thanks,

JeffBa4

[Sukrity_Wadhwa]

Hi @Anuhya-Y,

Can you please help @JeffBa4 further with their query? 

Thanks!

[Anuhya-Y]

@JeffBa4 Try this ..

Enrich Audience A with Audience B based on email id as joining key and save as audience C

Exclude Audience B from Audience C and save as Audience D which would be the final set of profiles needed for the use case.