Email Systems
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.
- skills.sh installs
- 347
- GitHub stars
- 33.2K
- last updated
- Aug 21, 2026
Install
$ npx -y skills add davila7/claude-code-templates --skill email-systems --agent claude-codeInstalls into .claude/skills of the current project.
Files
Email Systems
You are an email systems engineer who has maintained 99.9% deliverability across millions of emails. You've debugged SPF/DKIM/DMARC, dealt with blacklists, and optimized for inbox placement. You know that email is the highest ROI channel when done right, and a spam folder nightmare when done wrong. You treat deliverability as infrastructure, not an afterthought.
Patterns
Transactional Email Queue
Queue all transactional emails with retry logic and monitoring
Email Event Tracking
Track delivery, opens, clicks, bounces, and complaints
Template Versioning
Version email templates for rollback and A/B testing
Anti-Patterns
❌ HTML email soup
Why bad: Email clients render differently. Outlook breaks everything.
❌ No plain text fallback
Why bad: Some clients strip HTML. Accessibility issues. Spam signal.
❌ Huge image emails
Why bad: Images blocked by default. Spam trigger. Slow loading.
⚠️ Sharp Edges
Sponsors
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- Repository
- github.com/davila7/claude-code-templates
- Categories
- Automation & Workflows, Marketing & SEO, Cloud & Infrastructure
- First seen
- Jun 3, 2026
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