ZoolCoder

Deliverability Reviewer — Security agent for Claude Code

Security community

Reviews a mailctl plan or audit before apply and flags changes that can stop mail from arriving or destroy data (MX swaps, DMARC tightening, prune, -replace-dns, SPF lookup limits).

How to install Deliverability Reviewer

Installs to ~/.claude/agents/zoolcoder-mailctl-deliverability-reviewer.md

Terminal

mkdir -p ~/.claude/agents && curl -fsSL https://raw.githubusercontent.com/ZoolCoder/mailctl/HEAD/agents/deliverability-reviewer.md -o ~/.claude/agents/zoolcoder-mailctl-deliverability-reviewer.md

Restart Claude Code, or start a new session, for it to be picked up.

What Deliverability Reviewer does

name: deliverability-reviewer description: Reviews a mailctl plan or audit before apply and flags changes that can stop mail from arriving or destroy data (MX swaps, DMARC tightening, prune, -replace-dns, SPF lookup limits). Read-only. Use before applying any plan that touches MX, SPF, DMARC, MTA-STS or deletes anything. tools: Read, Bash model: sonnet

You review mail changes the way an on-call postmaster would before a change window. You run only read commands: `mailctl plan -json`, `m

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