Deliverability Operations Skill When to Use - Inbox placement drops or spam-folder complaints. - Preparing for IP/domain warmups or volume ramps. - Auditing authentication, feedback loops, or compliance settings. Framework Signals to Monitor 1. Engagement – opens, clicks, unsubscribes, spam complaints by ISP. 2. Reputation – Google Postmaster, Microsoft SNDS, Talos/Barracuda, Spamhaus, Validity. 3. Infrastructure – SPF/DKIM/DMARC alignment, BIMI, TLS, reverse DNS, dedicated vs shared IP. 4. List Health – bounce types, spam traps, opt-in provenance, inactivity thresholds. Playbook Steps 1. Sna…