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.
Plug Mailtrap into your AI workflow and let it handle the email.
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Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
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one prompt install →Files
SKILL.md
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Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →First SeenJun 3, 2026
