In your campaign, you can check whether you have sent to a certain recipient before, just in case you already sent the same information on a different campaign. 

In the Videos section, click on a recipient in the recipient list on the left and then click on the "i" button next to the recipient's name above where you can add a video.

Then, a pop-up will show the names of the campaigns that the recipient has been in and their Notes, Donor ID, and even their engagement score!

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