email-deliverability
Installation
SKILL.md
Email deliverability
Reads a domain's DNS through the free dns program in the hedwigai MCP's read-only shell.
Before you start
This skill uses the hedwigai MCP's bash tool. If they aren't available, tell the user to connect hedwigai — in Claude, from https://claude.ai/directory/hedwigai; in Claude Code, /plugin marketplace add un-seen/hedwigai-skills then /plugin install hedwigai@hedwigai; anywhere else, add https://mcp.hedwigai.com/ as a remote MCP server.
programs list shows what each program bills. Run a study with no arguments, or <program> --help, before the first call; don't guess flags. Output is JSON: use jq in the same shell, and keep work in /tmp, the only writable place.
Steps
dns records <domain>.- Reply with: MX provider, SPF (and whether it ends in
-allor~all), the DKIM selectors found, the DMARC policy, nameservers, and registration date.