email-systems▌
davila7/claude-code-templates · updated Apr 8, 2026
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.
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
| Issue | Severity | Solution |
|---|---|---|
| Missing SPF, DKIM, or DMARC records | critical | # Required DNS records: |
| Using shared IP for transactional email | high | # Transactional email strategy: |
| Not processing bounce notifications | high | # Bounce handling requirements: |
| Missing or hidden unsubscribe link | critical | # Unsubscribe requirements: |
| Sending HTML without plain text alternative | medium | # Always send multipart: |
| Sending high volume from new IP immediately | high | # IP warm-up schedule: |
| Emailing people who did not opt in | critical | # Permission requirements: |
| Emails that are mostly or entirely images | medium | # Balance images and text: |
Discussion
Product Hunt–style comments (not star reviews)- No comments yet — start the thread.
Ratings
4.6★★★★★36 reviews- ★★★★★Li Farah· Dec 28, 2024
email-systems fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
- ★★★★★Arjun Diallo· Dec 20, 2024
We added email-systems from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
- ★★★★★Chaitanya Patil· Dec 8, 2024
Useful defaults in email-systems — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
- ★★★★★Piyush G· Nov 27, 2024
email-systems is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
- ★★★★★Yusuf Johnson· Nov 19, 2024
Registry listing for email-systems matched our evaluation — installs cleanly and behaves as described in the markdown.
- ★★★★★Daniel Johnson· Nov 15, 2024
Solid pick for teams standardizing on skills: email-systems is focused, and the summary matches what you get after install.
- ★★★★★William Patel· Nov 11, 2024
email-systems reduced setup friction for our internal harness; good balance of opinion and flexibility.
- ★★★★★Shikha Mishra· Oct 18, 2024
Keeps context tight: email-systems is the kind of skill you can hand to a new teammate without a long onboarding doc.
- ★★★★★Layla Ramirez· Oct 10, 2024
email-systems reduced setup friction for our internal harness; good balance of opinion and flexibility.
- ★★★★★Zara Reddy· Oct 6, 2024
email-systems has been reliable in day-to-day use. Documentation quality is above average for community skills.
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