Outbound Tools
Manual and debug controls for the outbound send pipeline — contacts, campaigns, mailbox warm-up, and vendor integrations. Auto Flow covers the guided version of most of this inline; come here to inspect, override, or configure things directly.
Suppression List
Bounced, unsubscribed, and manually excluded addresses — never sent to again.
One list, one mechanism, regardless of why: bounces are added automatically when detected, unsubscribes and manual exclusions you add by hand below. An address here is protected across every campaign, not just the one it came from.