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Change what you hear about and how often. Takes about ten seconds, and beats unsubscribing over a budget band that's wrong.
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Preference links are tied to the email they were sent in and stop working after a while. Open the most recent email from Horizon Realty Group and use the "manage your preferences" link at the bottom of it.
Rather not wait? Call Travis at (252) 202-4945, or email Travisand he'll change it by hand.