That's an excellent question, and very easy to find!
Click on the name of the sent campaign from your Campaigns page and that will take you to the Email Activity page for that campaign. You will see the list(s) you sent it to directly beneath the name of the email.
If you have any further questions please feel free to reach out to us here. We are always happy to assist you in any way we can!
Donna_P. Community & Social Media Support
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