Spam Word Checker
growthenginenowoslawski/coldoutboundskills
Always-on spam and deliverability guardrails for cold email copy.
Cold email and outreach sequence design with personalization, deliverability optimization, follow-up cadence, and compliance (CAN-SPAM/GDPR).
Install Cold Email Outreach
$ npx skills add thatrebeccarae/claude-marketing --skill cold-email-outreach -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thatrebeccarae/claude-marketing cold-email-outreach --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/thatrebeccarae/claude-marketing.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/cold-email-outreach .claude/skills/cold-email-outreach && 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 "cold-email-outreach" agent skill from https://github.com/thatrebeccarae/claude-marketing/tree/main/skills/cold-email-outreach into .claude/skills/cold-email-outreach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-email-outreach", 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/thatrebeccarae/claude-marketing/tree/main/skills/cold-email-outreachType 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 thatrebeccarae/claude-marketing --skill cold-email-outreach -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thatrebeccarae/claude-marketing cold-email-outreach --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thatrebeccarae/claude-marketing.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/cold-email-outreach .agents/skills/cold-email-outreach && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "cold-email-outreach" agent skill from https://github.com/thatrebeccarae/claude-marketing/tree/main/skills/cold-email-outreach into .agents/skills/cold-email-outreach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-email-outreach", 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 thatrebeccarae/claude-marketing --skill cold-email-outreach -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thatrebeccarae/claude-marketing cold-email-outreach --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thatrebeccarae/claude-marketing.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/cold-email-outreach .cursor/skills/cold-email-outreach && 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 "cold-email-outreach" agent skill from https://github.com/thatrebeccarae/claude-marketing/tree/main/skills/cold-email-outreach into .cursor/skills/cold-email-outreach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-email-outreach", 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/thatrebeccarae/claude-marketing.git --path skills/cold-email-outreach--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 thatrebeccarae/claude-marketing --skill cold-email-outreach -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thatrebeccarae/claude-marketing cold-email-outreach --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thatrebeccarae/claude-marketing.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/cold-email-outreach .gemini/skills/cold-email-outreach && 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 "cold-email-outreach" agent skill from https://github.com/thatrebeccarae/claude-marketing/tree/main/skills/cold-email-outreach into .gemini/skills/cold-email-outreach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-email-outreach", 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 thatrebeccarae/claude-marketing cold-email-outreachInstalls 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 thatrebeccarae/claude-marketing --skill cold-email-outreach -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/thatrebeccarae/claude-marketing.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/cold-email-outreach .github/skills/cold-email-outreach && 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 "cold-email-outreach" agent skill from https://github.com/thatrebeccarae/claude-marketing/tree/main/skills/cold-email-outreach into .github/skills/cold-email-outreach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-email-outreach", 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 thatrebeccarae/claude-marketing --skill cold-email-outreach -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install thatrebeccarae/claude-marketing cold-email-outreach --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thatrebeccarae/claude-marketing.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/cold-email-outreach .opencode/skills/cold-email-outreach && 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 "cold-email-outreach" agent skill from https://github.com/thatrebeccarae/claude-marketing/tree/main/skills/cold-email-outreach into .opencode/skills/cold-email-outreach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-email-outreach", 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
cold-email-outreach- GitHub stars
- 161
- Token cost
- ~1.3k tokens
- SKILL.md length
- 484 words
- Files
- 4
- Skills in repo
- 55
- Repo updated
- First seen
- Licence
- MIT
At a glance
Cold email and outreach sequence design with personalization, deliverability optimization, follow-up cadence, and compliance (CAN-SPAM/GDPR).
- Works in 8 steps: Mass blasting — sending same email to… → No personalization — "Dear Sir/Madam" or… → Feature dumping — listing product… → …
- The user asks about cold email
- SKILL.md covers Install, Deliverability Fundamentals, Sequence Design and Compliance, plus 2 more sections
- Calls git
What it does
Cold Email Outreach is an agent skill from thatrebeccarae/claude-marketing. Cold email and outreach sequence design with personalization, deliverability optimization, follow-up cadence, and compliance (CAN-SPAM/GDPR). Use when the user asks about cold email, outreach sequences, email prospecting, cold outreach, or email deliverability for outbound.
Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files (for example `EXAMPLES.md` and `REFERENCE.md`).
It sits in Sales & Support, covering Cold outreach and Transactional email. The repository describes itself as: A full marketing department for Claude Code. Skill packs for Klaviyo, Shopify, GA4, Looker Studio, paid media, and more. Audit, optimize, and report using natural language. The licence is MIT.
When your agent uses it
- The user asks about cold email
- Outreach sequences
- Email prospecting
- Email deliverability for outbound
Example prompts
- “/cold-email-outreach”
Workflow steps
8 steps, taken from the first numbered list in SKILL.md.
- Mass blasting — sending same email to 1000+ at once kills deliverability
- No personalization — "Dear Sir/Madam" or obviously templated
- Feature dumping — listing product features instead of addressing pain
- Aggressive follow-ups — daily follow-ups = spam reports
- No unsubscribe — illegal under CAN-SPAM and GDPR
- Misleading subjects — "Re:" or "Fwd:" on first contact
- Too many links/images — triggers spam filters
- No domain warming — sending 500 emails day 1 from new domain
What it can do on your machine
Read from SKILL.md and the folder at commit a8a63ec. 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
Shell commands in SKILL.md call:
git
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.
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
Cold Email Outreach loads about 1.3k tokens when it runs. Until then it costs about 74 tokens; SKILL.md has 484 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 thatrebeccarae/claude-marketing at commit a8a63ec, republished under its MIT licence (© thatrebeccarae). 484 words, ~1,316 tokens.
Download SKILL.mdSave it as
.claude/skills/cold-email-outreach/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.- name
- cold-email-outreach
- description
- Cold email and outreach sequence design with personalization, deliverability optimization, follow-up cadence, and compliance (CAN-SPAM/GDPR). Use when the user asks about cold email, outreach sequences, email prospecting, cold outreach, or email deliverability for outbound.
- license
- MIT
- origin
- custom
- author
- Rebecca Rae Barton
- author_url
- https://github.com/thatrebeccarae
- metadata.version
- 1.0.0
- metadata.category
- strategy
- metadata.domain
- cold-email
- metadata.updated
- 2026-03-18
- metadata.tested
- 2026-03-18
- metadata.tested_with
- Claude Code v2.1
Cold Email & Outreach
Design, optimize, and scale cold email outreach with high deliverability and compliance.
Install
git clone https://github.com/thatrebeccarae/claude-marketing.git && cp -r claude-marketing/skills/cold-email-outreach ~/.claude/skills/Deliverability Fundamentals
Authentication (Required)
| Record | Purpose | Check |
|---|---|---|
| SPF | Authorizes sending servers | dig TXT domain.com |
| DKIM | Cryptographic message signing | DKIM selector lookup |
| DMARC | Policy for failed auth | dig TXT _dmarc.domain.com |
Domain Warming
New domains or IPs need gradual volume ramp:
| Week | Daily Volume | Notes |
|---|---|---|
| 1 | 5-10 | Known contacts only |
| 2 | 15-25 | Mix of known and new |
| 3 | 30-50 | Monitor bounce/spam rates |
| 4 | 50-100 | Scale if rates healthy |
| 5+ | 100-200 | Max per domain/day |
Dedicated sending domain: Use a subdomain (outreach.company.com) to protect your primary domain reputation.
Health Benchmarks
| Metric | Healthy | Warning | Critical |
|---|---|---|---|
| Bounce rate | <2% | 2-5% | >5% |
| Spam complaint | <0.1% | 0.1-0.3% | >0.3% |
| Open rate | >40% | 20-40% | <20% |
| Reply rate | >5% | 2-5% | <2% |
Sequence Design
Optimal Sequence Structure
Email 1 (Day 0) — Value-first introduction
Email 2 (Day 3) — Follow-up with new angle
Email 3 (Day 7) — Social proof / case study
Email 4 (Day 14) — Breakup email (last attempt)Timing
- Best send days: Tuesday, Wednesday, Thursday
- Best send times: 8-10am recipient timezone
- Avoid: Monday morning, Friday afternoon, weekends
- Follow-up spacing: 3-5 days between emails (never daily)
Subject Line Formulas
| Formula | Example | Open Rate |
|---|---|---|
| Question | "Quick question about [company] growth?" | High |
| Mutual connection | "Saw your talk at [event]" | Very high |
| Specific result | "[Company] could save $40K/year on [X]" | High |
| Curiosity | "Idea for [specific initiative]" | Medium-high |
| Direct | "15-min call about [pain point]?" | Medium |
Rules: Under 50 characters. No ALL CAPS. No spam triggers (free, guarantee, act now). Personalized > generic.
Email Body Framework
Line 1: Personalized opener (research-based, NOT "I hope this finds you well")
Line 2-3: Pain point or observation specific to them
Line 4-5: How you solve it (one sentence, with social proof)
Line 6: Low-friction CTA (question, not demand)Length: 50-125 words. 3-5 sentences max. Mobile-readable.
Personalization Tiers
| Tier | Effort | When | Example |
|---|---|---|---|
| Researched | High (5+ min/email) | Top 50 accounts | Reference specific blog post, recent funding, or LinkedIn activity |
| Templated | Medium (1 min) | Mid-tier prospects | Company name, industry pain point, role-specific angle |
| Dynamic | Low (automated) | Scale outreach | First name, company name, industry via merge fields |
Compliance
Show full SKILL.md (206 more words)Show less
CAN-SPAM (US)
- Clear sender identity (real name and company)
- Accurate subject line (not misleading)
- Physical mailing address in footer
- Unsubscribe mechanism (honor within 10 days)
- Mark as advertisement if applicable
GDPR (EU/UK)
- Legitimate interest basis for B2B cold email (document it)
- Clear identity and purpose in first email
- Easy opt-out mechanism
- Do not email personal email addresses without consent
- Data retention policy for prospect data
Best Practices
- Always include unsubscribe link
- Respect opt-outs immediately (automated)
- Never buy email lists
- Verify emails before sending (reduce bounces)
- Keep records of consent and opt-outs
Anti-Patterns
- Mass blasting — sending same email to 1000+ at once kills deliverability
- No personalization — "Dear Sir/Madam" or obviously templated
- Feature dumping — listing product features instead of addressing pain
- Aggressive follow-ups — daily follow-ups = spam reports
- No unsubscribe — illegal under CAN-SPAM and GDPR
- Misleading subjects — "Re:" or "Fwd:" on first contact
- Too many links/images — triggers spam filters
- No domain warming — sending 500 emails day 1 from new domain
Integration with Other Skills
- copywriting-frameworks — Apply PAS, BAB, QUEST to cold email copy
- icp-research — Define ideal customer profile before building prospect lists
- email-composer — General email writing (cold-email-outreach is specifically for outbound sequences)
- klaviyo-analyst — For marketing automation email (different from cold outreach)
© thatrebeccarae, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 3 other files in skills/cold-email-outreach of thatrebeccarae/claude-marketing.
- SKILL.md
- EXAMPLES.md
- LICENSE
- REFERENCE.md
Open the folder on GitHubat commit a8a63ec
Compare with similar skills
Cold Email Outreach 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 |
|---|---|---|---|---|---|---|
| Cold Email Outreach this skillthatrebeccarae/claude-marketing | 161 | — | ~1.3k | Automated safety check: Pass | MIT | |
| Spam Word Checkergrowthenginenowoslawski/coldoutboundskills | 753 | — | ~2.5k | Automated safety check: Pass | MIT | |
| Tech Stack Teardowngooseworks-ai/goose-skills | 1.2k | 1 repos | ~3.1k | Automated safety check: Notes | MIT | |
| Email Template GeneratorOneWave-AI/claude-skills | 336 | 1 repos | ~906 | Automated safety check: Pass | MIT | |
| Outbound AnalystOthmane-Khadri/YALC-the-GTM-operating-system | 318 | — | ~1.9k | Automated safety check: Pass | MIT | |
| Cold Outreachericrisco/rsc-harness | 180 | — | ~4.1k | Automated safety check: Pass | MIT |
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Questions about Cold Email Outreach
What does Cold Email Outreach do?
Cold email and outreach sequence design with personalization, deliverability optimization, follow-up cadence, and compliance (CAN-SPAM/GDPR). Cold Email Outreach is an agent skill from thatrebeccarae/claude-marketing. Cold email and outreach sequence design with personalization, deliverability optimization, follow-up cadence, and compliance (CAN-SPAM/GDPR).
When should I use Cold Email Outreach?
Cold Email Outreach fits situations like: the user asks about cold email; outreach sequences; email prospecting; email deliverability for outbound.
How do I install Cold Email Outreach in Claude Code?
Run `npx skills add thatrebeccarae/claude-marketing --skill cold-email-outreach -a claude-code`. Or copy the skill folder (skills/cold-email-outreach in thatrebeccarae/claude-marketing) into .claude/skills/cold-email-outreach in your project. Claude Code loads it when a task matches its description.
How do I install Cold Email Outreach in Codex?
Run `npx skills add thatrebeccarae/claude-marketing --skill cold-email-outreach -a codex`. Or copy the skill folder (skills/cold-email-outreach in thatrebeccarae/claude-marketing) into .agents/skills/cold-email-outreach in your project. Codex loads it when a task matches its description.
Can I use Cold Email Outreach 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 thatrebeccarae/claude-marketing --skill cold-email-outreach -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/cold-email-outreach, .gemini/skills/cold-email-outreach, .github/skills/cold-email-outreach and .opencode/skills/cold-email-outreach in your project.
What does Cold Email Outreach need to run?
Going by SKILL.md and its folder, Cold Email Outreach needs the command-line tools its instructions call (git).
Does Cold Email Outreach access the network?
SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Cold Email Outreach 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 Cold Email Outreach use?
Cold Email Outreach is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Cold Email Outreach use?
About 1.3k tokens (SKILL.md is roughly 5.3k 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 Cold Email Outreach?
Skills that share tags, products or a category with Cold Email Outreach: Spam Word Checker (growthenginenowoslawski/coldoutboundskills, 753 stars), Tech Stack Teardown (gooseworks-ai/goose-skills, 1.2k stars), Email Template Generator (OneWave-AI/claude-skills, 336 stars) and Outbound Analyst (Othmane-Khadri/YALC-the-GTM-operating-system, 318 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Cold Email Outreach?
thatrebeccarae (a GitHub user) maintains it in thatrebeccarae/claude-marketing, which has 161 GitHub stars. The repository holds 55 skills in this directory. The repository was last updated on May 14, 2026.
Source: thatrebeccarae/claude-marketing on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.