Add new list contacts automatically to email blocklist

Your new contacts added to a marketing list without suppression checks can cause accidental sends and bounce spikes. It blocks those addresses so campaigns stay clean before the next send.

Overview

Unchecked list additions expose you to accidental outreach and deliverability risk; this flow stops problem addresses at the source by adding them to your suppression list as they appear. Deliverability engineers and IT will see cleaner campaign lists and fewer risky sends before the next campaign deploy.