# Email Systems > 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 cov... Use when this capability is needed. - Skill: `tomevault-io/email-systems` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/email-systems` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/email-systems/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Marketing & Growth - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/email-systems --- # 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 to Use This skill is applicable to execute the workflow or actions described in the overview. --- ## AGI Framework Integration > **Adapted for [@techwavedev/agi-agent-kit](https://www.npmjs.com/package/@techwavedev/agi-agent-kit)** > Original source: [antigravity-awesome-skills](https://github.com/sickn33/antigravity-awesome-skills) ### Memory-First Protocol Retrieve prior agent configurations, team compositions, and orchestration patterns. Critical for multi-agent system consistency. ```bash # Check for prior AI agent orchestration context before starting python3 execution/memory_manager.py auto --query "agent patterns and orchestration strategies for Email Systems" ``` ### Storing Results After completing work, store AI agent orchestration decisions for future sessions: ```bash python3 execution/memory_manager.py store \ --content "Agent pattern: hierarchical orchestration with Control Tower dispatcher, 3 specialist sub-agents" \ --type decision --project \ --tags email-systems ai-agents ``` ### Multi-Agent Collaboration This skill is inherently multi-agent. Use cross-agent context to coordinate task distribution and avoid duplicate work. ```bash python3 execution/cross_agent_context.py store \ --agent "" \ --action "Agent architecture designed — Control Tower + specialist agents with shared Qdrant memory" \ --project ``` ### Control Tower Integration Register agents and tasks with the Control Tower (`execution/control_tower.py`) for centralized orchestration across machines and LLM providers. ### Blockchain Identity Each agent has a cryptographic Ed25519 identity. All memory writes are signed — enabling trust verification in multi-agent systems. --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/techwavedev) — claim your Tome and manage your conversions.