email-systems
Configures and monitors email systems to ensure high deliverability and effective transactional messaging.
Install
mkdir -p .claude/skills/email-systems && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/566" && unzip -o skill.zip -d .claude/skills/email-systems && rm skill.zipInstalls to .claude/skills/email-systems
Activation
This is the description your AI agent reads to decide when to run this skill — the better it matches your request, the more reliably it fires.
Email has the highest ROI of any marketing channel. $36 for every $1 spent. Yet most startups treat it as an afterthought - bulk blasts, no personalization, landing in spam folders. This skill covers transactional email that works, marketing automation that converts, deliverability that reaches inboxes, and the infrastructure decisions that scale. Use when: keywords, file_patterns, code_patterns.Key capabilities
- →Configure SPF, DKIM, and DMARC DNS records
- →Implement transactional email queueing with retry logic
- →Track email delivery, opens, clicks, and bounces
- →Manage email template versioning
- →Debug email blacklist and deliverability issues
How it works
It applies infrastructure patterns like event tracking and DNS authentication to ensure emails reach the inbox rather than spam folders.
Inputs & outputs
When to use email-systems
- →Configure SPF, DKIM, and DMARC records
- →Debug email blacklist issues
- →Set up transactional email queues with retries
- →Optimize email templates for deliverability
About this skill
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: |
When not to use it
- →When sending bulk marketing blasts without proper opt-in
- →When using shared IPs for high-volume transactional mail
Prerequisites
Limitations
- →Requires technical access to DNS records
- →Cannot guarantee inbox placement if sender reputation is already damaged
How it compares
It treats email as a technical infrastructure component rather than a simple messaging task.
Compared to similar skills
email-systems side by side with the closest alternatives in the catalog.
| Skill | Installs | Updated | Safety | Difficulty |
|---|---|---|---|---|
| email-systems (this skill) | 5 | 6mo | No flags | Advanced |
| home-assistant-manager | 9 | 8mo | Review | Advanced |
| it-operations | 1 | 7mo | No flags | Advanced |
| oly | 0 | 3mo | Review | Intermediate |
Try saying
Example prompts that trigger this skill in your AI assistant.
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