Diagnose and fix email deliverability issues. Use when the user mentions emails going to spam, high bounce rates, domain authentication (SPF/DKIM/DMARC), or sender reputation problems.
Install
npx skills add ActiveCampaign/activecampaign-plugin --skill deliverability-advisornpx skills add ActiveCampaign/activecampaign-plugin --skill deliverability-advisor -a claude-code -gnpx skills add ActiveCampaign/activecampaign-plugin --skill deliverability-advisor -a codex -ggemini skills install https://github.com/ActiveCampaign/activecampaign-plugin.git --path skills/deliverability-advisorgh skill install ActiveCampaign/activecampaign-plugin deliverability-advisorgit clone --depth 1 https://github.com/ActiveCampaign/activecampaign-plugin /tmp/ActiveCampaign__activecampaign-plugin
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/ActiveCampaign__activecampaign-plugin/skills/deliverability-advisor ~/.claude/skills/deliverability-advisor # Claude Code
cp -R /tmp/ActiveCampaign__activecampaign-plugin/skills/deliverability-advisor ~/.agents/skills/deliverability-advisor # Codex, Cursor, Gemini CLI, Copilot, OpenCode