For founders running campaigns on Instantly.ai — how are you managing your inbox beyond just sending? The actual problems I'm curious about: When you get hot replies, how fast are they categorized and actioned? How are you handling unsubscribes at scale? Manual blocklist, or automated? Are you monitoring domain health? (SPF, DKIM, blacklists, expiry dates) Just asking because these seem to be the stuff agencies talk about separately but never actually solve end-to-end. What's your current setup?