Summary
Most startups blast emails and wonder why they land in spam. This skill treats deliverability as infrastructure, covering SPF/DKIM/DMARC setup, transactional queues with retry logic, and the IP warm-up schedules that prevent blacklisting. It pushes hard on the fundamentals: multipart messages with plain text fallbacks, proper bounce handling, and the DNS records that actually get you into inboxes. The anti-patterns are specific (HTML soup that breaks in Outlook, image-only emails that trigger spam filters). Use this when you need email to work at scale, not just technically send.
Install to Claude Code
npx -y skills add davila7/claude-code-templates --skill email-systems --agent claude-codeInstalls into .claude/skills of the current project.
Keeps your Mac awake while Claude Code, Codex or Cursor works. Lets it sleep when they are done.
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Notes, actions and memory. Without a meeting bot. First month 100% off.
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Keeps your Mac awake while Claude Code, Codex or Cursor works. Lets it sleep when they are done.
Try free for 7 days →Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
Block now (100% free) →Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Free an open-source skills that make AI coding agents easier to understand, verify, and control.
Download for free →Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →First SeenJun 3, 2026
