Don't send CV on spec for the same candidate to a contact who has already had it
Much like how you can't send the same job alert to a candidate multiple times

Hi Katie
Your feature suggestion is now live on the user community and available for voting.
Thanks,
Catherine
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Scott Sorbie commented
I will use the Matches on the candidate record to spec CV's out, then do a search and send to more contacts.
If one of the matches is on the search, they will recieve twice.
Can you implement a way to ensure the email would be stopped from the search if they have just recieved it from the candidate record?