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Hi there, Sam from Moz's Help Team here! I'm so sorry about this - I'm afraid there's no way for us to recover a deleted campaign, as we don't retain that data after deletion. Did you happen to have any reports set up with us? If so, you might still have those in your email! I'm sorry I can't be of more help on this one. Feel free to give me a shout if there's anything else I can help with.