Stripe Projects
fossasia/eventyay
A skill your agent uses when the user wants to provision infrastructure or third-party services using Stripe Projects.
Email has the highest ROI of any marketing channel. An agent skill from benjaminasterA/antigravity-awesome-skills.
Install Email Systems
$ npx skills add benjaminasterA/antigravity-awesome-skills --skill email-systems -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install benjaminasterA/antigravity-awesome-skills email-systems --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/benjaminasterA/antigravity-awesome-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/email-systems .claude/skills/email-systems && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "email-systems" agent skill from https://github.com/benjaminasterA/antigravity-awesome-skills/tree/main/skills/email-systems into .claude/skills/email-systems/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email-systems", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/benjaminasterA/antigravity-awesome-skills/tree/main/skills/email-systemsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add benjaminasterA/antigravity-awesome-skills --skill email-systems -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install benjaminasterA/antigravity-awesome-skills email-systems --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/benjaminasterA/antigravity-awesome-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/email-systems .agents/skills/email-systems && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "email-systems" agent skill from https://github.com/benjaminasterA/antigravity-awesome-skills/tree/main/skills/email-systems into .agents/skills/email-systems/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email-systems", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add benjaminasterA/antigravity-awesome-skills --skill email-systems -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install benjaminasterA/antigravity-awesome-skills email-systems --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/benjaminasterA/antigravity-awesome-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/email-systems .cursor/skills/email-systems && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "email-systems" agent skill from https://github.com/benjaminasterA/antigravity-awesome-skills/tree/main/skills/email-systems into .cursor/skills/email-systems/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email-systems", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/benjaminasterA/antigravity-awesome-skills.git --path skills/email-systems--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add benjaminasterA/antigravity-awesome-skills --skill email-systems -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install benjaminasterA/antigravity-awesome-skills email-systems --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/benjaminasterA/antigravity-awesome-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/email-systems .gemini/skills/email-systems && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "email-systems" agent skill from https://github.com/benjaminasterA/antigravity-awesome-skills/tree/main/skills/email-systems into .gemini/skills/email-systems/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email-systems", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install benjaminasterA/antigravity-awesome-skills email-systemsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add benjaminasterA/antigravity-awesome-skills --skill email-systems -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/benjaminasterA/antigravity-awesome-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/email-systems .github/skills/email-systems && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "email-systems" agent skill from https://github.com/benjaminasterA/antigravity-awesome-skills/tree/main/skills/email-systems into .github/skills/email-systems/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email-systems", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add benjaminasterA/antigravity-awesome-skills --skill email-systems -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install benjaminasterA/antigravity-awesome-skills email-systems --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/benjaminasterA/antigravity-awesome-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/email-systems .opencode/skills/email-systems && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "email-systems" agent skill from https://github.com/benjaminasterA/antigravity-awesome-skills/tree/main/skills/email-systems into .opencode/skills/email-systems/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "email-systems", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
email-systems- GitHub stars
- 364
- Used in
- 1 other repo
- Token cost
- ~527 tokens
- SKILL.md length
- 230 words
- Files
- 1
- Skills in repo
- 14
- Repo updated
- First seen
- Licence
- MIT
At a glance
Email has the highest ROI of any marketing channel. An agent skill from benjaminasterA/antigravity-awesome-skills.
- Tasks that involve Transactional email
- SKILL.md covers Patterns, Anti-Patterns, ⚠️ Sharp Edges and When to Use
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Email Systems is an agent skill from benjaminasterA/antigravity-awesome-skills. 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...
Its SKILL.md is about 530 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Backend & APIs, covering Transactional email. The repository describes itself as: antigravity-awesome-skills. The licence is MIT.
When your agent uses it
- Tasks that involve Transactional email
Example prompts
- “/email-systems”
What it can do on your machine
Read from SKILL.md and the folder at commit 46a9c2d. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Email Systems loads about 527 tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 230 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from benjaminasterA/antigravity-awesome-skills at commit 46a9c2d, republished under its MIT licence (© benjaminasterA). 230 words, ~527 tokens.
Download SKILL.mdSave it as
.claude/skills/email-systems/SKILL.md (or your agent's skills folder).- name
- email-systems
- description
- 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...
- source
- vibeship-spawner-skills (Apache 2.0)
- risk
- unknown
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.
© benjaminasterA, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/email-systems of benjaminasterA/antigravity-awesome-skills.
Open the folder on GitHubat commit 46a9c2d
Used in 1 other repository
We found 3 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in benjaminasterA/antigravity-awesome-skills, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Email Systems next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Email Systems this skillbenjaminasterA/antigravity-awesome-skills | 364 | 1 repos | ~527 | Automated safety check: Pass | MIT | |
| Stripe Projectsfossasia/eventyay | 1.7k | 5 repos | ~2k | Automated safety check: Notes | Apache-2.0 | |
| WooCommerce Email Editor Developmentwoocommerce/woocommerce | 11k | — | ~893 | Automated safety check: Pass | Custom licence | |
| Email Best Practicesviclafouch/meme-studio | 110 | 7 repos | ~787 | Automated safety check: Pass | None | |
| React Emailviclafouch/meme-studio | 110 | 2 repos | ~3.6k | Automated safety check: Pass | MIT | |
| Email Deliverability Auditgrowthenginenowoslawski/coldoutboundskills | 740 | — | ~3.4k | Automated safety check: Pass | MIT |
Similar skills
WooCommerce Email Editor Development
woocommerce/woocommerce
Sets up a local environment for the WooCommerce block email editor, with a watcher, Mailpit email capture and build and test commands for its PHP and JS packages.
Email Best Practices
viclafouch/meme-studio
A skill your agent uses when building email features, emails going to spam, high bounce rates, setting up SPF/DKIM/DMARC authentication, implementing email capture, ensuring compliance (CAN-SPAM…
React Email
viclafouch/meme-studio
A skill your agent uses when creating HTML email templates with React components - welcome emails, password resets, notifications, order confirmations, newsletters, or transactional emails.
Email Deliverability Audit
growthenginenowoslawski/coldoutboundskills
Diagnostic audit for a running cold email program. An agent skill from growthenginenowoslawski/coldoutboundskills.
Cloudflare Email Service
hodgef/apiker
Send and receive transactional emails with Cloudflare Email Service (Email Sending + Email Routing).
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Related
Categories
Questions about Email Systems
What does Email Systems do?
Email has the highest ROI of any marketing channel. An agent skill from benjaminasterA/antigravity-awesome-skills. Email Systems is an agent skill from benjaminasterA/antigravity-awesome-skills. Email has the highest ROI of any marketing channel.
When should I use Email Systems?
Email Systems fits situations like: tasks that involve Transactional email.
How do I install Email Systems in Claude Code?
Run `npx skills add benjaminasterA/antigravity-awesome-skills --skill email-systems -a claude-code`. Or copy the skill folder (skills/email-systems in benjaminasterA/antigravity-awesome-skills) into .claude/skills/email-systems in your project. Claude Code loads it when a task matches its description.
How do I install Email Systems in Codex?
Run `npx skills add benjaminasterA/antigravity-awesome-skills --skill email-systems -a codex`. Or copy the skill folder (skills/email-systems in benjaminasterA/antigravity-awesome-skills) into .agents/skills/email-systems in your project. Codex loads it when a task matches its description.
Can I use Email Systems in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add benjaminasterA/antigravity-awesome-skills --skill email-systems -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/email-systems, .gemini/skills/email-systems, .github/skills/email-systems and .opencode/skills/email-systems in your project.
What does Email Systems need to run?
SKILL.md names no scripts, command-line tools or credentials: Email Systems is instructions for the agent only.
Does Email Systems access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Email Systems safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Email Systems use?
Email Systems is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Email Systems use?
About 527 tokens (SKILL.md is roughly 2.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Email Systems?
Skills that share tags, products or a category with Email Systems: Stripe Projects (fossasia/eventyay, 1.7k stars), WooCommerce Email Editor Development (woocommerce/woocommerce, 11k stars), Email Best Practices (viclafouch/meme-studio, 110 stars) and React Email (viclafouch/meme-studio, 110 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Email Systems?
benjaminasterA (a GitHub user) maintains it in benjaminasterA/antigravity-awesome-skills, which has 364 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on October 6, 2026.
Source: benjaminasterA/antigravity-awesome-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.