To avoid contacting the same prospect multiple time remember this:

  1. A prospect can only be in 1 campaign at a time. So don't worry, if you try to add a prospect that is already in a campaign, it just won't work.
  2. To select prospects that have never been contacted, use the prospects filter "Last sent email" -> "is unknown"
  3. When you open a prospect page and click on "Email" or "Campaign" you'll see a notice telling you that the prospect has already been contacted before.

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