There should be a feature where you can get a list of all your suspended contacts so you can reach out their companies to see who the correct email address is to send things to going forward.
Thanks for sharing this feedback with us. At this time having a cumulative report like this is not an available feature. We apologize for any inconvenience caused from having to export these contacts through each individual campaign and will continue to collect both requests along with use case examples for this feature idea.
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