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Agent skill

Cold Email Outreach

by gooseworks-ai in gooseworks-ai/goose-skills

End-to-end cold email outreach orchestration. An agent skill from gooseworks-ai/goose-skills.

MITAuto-check: notesSales & Support

Install Cold Email Outreach

skills CLI
$ npx skills add gooseworks-ai/goose-skills --skill cold-email-outreach -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install gooseworks-ai/goose-skills cold-email-outreach --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/gooseworks-ai/goose-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/outreach/capabilities/cold-email-outreach .claude/skills/cold-email-outreach && rm -rf skills-src

Use ~/.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/

Facts

Skill name
cold-email-outreach
GitHub stars
1.2k
Used in
1 other repo
Token cost
~3.4k tokens
SKILL.md length
1,510 words
Files
2
Skills in repo
273
Repo updated
First seen
Licence
MIT

At a glance

End-to-end cold email outreach orchestration. An agent skill from gooseworks-ai/goose-skills.

  • Works in 6 steps: Intake → Lead Ingestion → Sequence Design → …
  • Tasks that involve Cold outreach
  • SKILL.md covers When to Use, Supported Outreach Tools, Prerequisites and Phase 0: Intake, plus 8 more sections
  • Needs SMARTLEAD_API_KEY

What it does

Cold Email Outreach is an agent skill from gooseworks-ai/goose-skills. End-to-end cold email outreach orchestration. Handles goal alignment, lead ingestion from any source (CSV, paste, CRM export, database), sequence design, email generation, campaign setup in the user's chosen outreach tool, and launch. Tool-agnostic — supports Smartlead (full MCP automation), Instantly, Lemlist, Apollo, or manual CSV export.

Its SKILL.md is about 3.4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `skill.meta.json`).

It sits in Sales & Support, covering Cold outreach, CSV and tabular files and GraphQL. It works with Model Context Protocol. The repository describes itself as: Library of Growth & GTM skills + data APIs for Claude Code, Codex, Cursor to run ads, social, content, lead gen, seo and data scraping. The licence is MIT.

When your agent uses it

  • Tasks that involve Cold outreach
  • Tasks that involve CSV and tabular files
  • Tasks that involve GraphQL

Example prompts

  • “/cold-email-outreach”

Requirements

  • A credential in SMARTLEAD_API_KEY

Workflow steps

6 steps, taken from the step headings in SKILL.md.

  1. Intake
  2. Lead Ingestion
  3. Sequence Design
  4. Email Generation
  5. Campaign Setup
  6. Review & Launch

What it can do on your machine

Read from SKILL.md and the folder at commit c650c6d. 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 these keys or tokens, usually read from environment variables:

    • SMARTLEAD_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Cold Email Outreach loads about 3.4k tokens when it runs. Until then it costs about 91 tokens; SKILL.md has 1,510 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~91
When it runs · the whole SKILL.md, loaded when a task matches
~3.4k

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: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NoteMentions a .env fileSKILL.md:370
    PI_KEY` not set | Ask user to add it to `.env` or export it |

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 gooseworks-ai/goose-skills at commit c650c6d, republished under its MIT licence (© gooseworks-ai). 1,510 words, ~3,410 tokens.

Download SKILL.mdSave it as .claude/skills/cold-email-outreach/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
cold-email-outreach
description
End-to-end cold email outreach orchestration. Handles goal alignment, lead ingestion from any source (CSV, paste, CRM export, database), sequence design, email generation, campaign setup in the user's chosen outreach tool, and launch. Tool-agnostic — supports Smartlead (full MCP automation), Instantly, Lemlist, Apollo, or manual CSV export.
tags
outreach

Cold Email Outreach

The final mile of the outbound pipeline. Takes leads from wherever the user has them, builds email sequences, loads campaigns into the user's chosen outreach tool, and launches.

Tool-agnostic: Asks the user which outreach platform they use. Defaults to Smartlead if they have MCP tools configured. Falls back to CSV export for any other tool or manual workflow.

When to Use

Use this skill when:

  • User says "launch a campaign", "send outreach", "email these leads", "set up cold email"
  • User has a list of leads and wants to run an outbound email campaign
  • User wants to create and configure a campaign in Smartlead or another outreach tool

Supported Outreach Tools

This skill does NOT assume a specific tool. It asks first, then adapts.

ToolIntegrationHow It Works
Smartlead (default)MCP tools (mcp__smartlead__*)Full automation: create campaign, add sequences, import leads, allocate mailboxes, configure schedule, launch
InstantlyCSV importGenerate CSV matching Instantly's import format, user uploads manually
LemlistCSV importGenerate CSV with Lemlist-compatible columns
ApolloCSV importGenerate CSV matching Apollo sequence import format
Manual / OtherCSV + instructionsExport leads + emails as generic CSV, provide setup instructions

Tool selection logic:

  1. Ask user in Phase 0: "Which outreach tool do you use?"
  2. If Smartlead → use MCP tools for full automation
  3. If Instantly / Lemlist / Apollo → generate tool-specific import CSV
  4. If Other or unknown → generate generic CSV (email, first_name, last_name, company, title, subject, body per touch) and ask user for their tool's import requirements

Prerequisites

Environment Variables

For Smartlead (full automation):

SMARTLEAD_API_KEY=your_api_key_here

All Smartlead API calls go to https://server.smartlead.ai/api/v1 with ?api_key=$SMARTLEAD_API_KEY appended. Rate limit: 10 requests per 2 seconds.

For CSV-based tools: No env vars needed.

Phase 0: Intake

Ask all questions at once. Organize by category. Skip any already answered.

Campaign Goal
  1. What's the objective? (book meetings, drive demo requests, get replies, nurture)
  2. What's the outreach angle or hook? (hiring signal, competitor displacement, event-based, pain-based, cold database)
  3. What should we name this campaign?
Outreach Tool
  1. Which outreach tool do you use? (Smartlead / Instantly / Lemlist / Apollo / Other / Just give me a CSV)
Lead Source
  1. Where are your leads? Accept any of these:
    • CSV file — read the file, map columns to required fields
    • Pasted list — names, emails, companies pasted directly
    • CRM export — Salesforce, HubSpot, or other CRM data
    • Database query — if the user has a database, help them query it
    • Upstream output — data from a prior task in this conversation
  2. Any exclusions? (specific companies, recently contacted leads, certain titles)
  3. Max campaign size? (default: 200)

Minimum required per lead: email address. Nice to have: first_name, last_name, company, title.

Sequence Design
  1. How many touches? (default: 3)
  2. Timing between touches? (default: Day 1 / Day 5 / Day 12)
  3. Personalization tier? (Tier 1: merge fields only / Tier 2: segment-specific / Tier 3: unique per lead)
Sending Config (skip if CSV export)
  1. Which email accounts should send? (list accounts or "use all available")
  2. Sending schedule? (default: Mon-Fri 8am-5pm in recipient's timezone)
  3. Daily send limit per account? (default: 30/day)
  4. Track opens and clicks? (default: opens yes, clicks no)

Phase 1: Lead Ingestion

Parse Leads

Accept leads from whatever source the user provides:

  • CSV file: Read the file. Flexibly match columns:
    • email (required) — also matches Email, email_address
    • first_name — also matches firstname, first, First Name
    • last_name — also matches lastname, last, Last Name
    • company_name — also matches company, organization, Company
    • Any extra columns become custom fields
  • Pasted data: Parse whatever format the user provides. Extract emails, names, companies.
  • CRM/Database: Help the user query or export, then parse the result.
Validate & Deduplicate
  • Remove rows without a valid email
  • Deduplicate by email (keep first occurrence)
  • Report: total rows, valid, invalid, duplicates removed
Present & Confirm

Show a sample table (10-15 leads) with:

  • Name, Title, Company, Email

Tell user: total eligible leads, how many were invalid/removed.

Ask user to confirm or adjust before proceeding.

Phase 2: Sequence Design

Present the sequence plan as a table before writing any copy:

TouchDayEmail TypeFrameworkCTA
11Cold introSignal-Proof-Ask15-min call
25New angle / assetPASResource offer
312Social proofBABOpen to chat?

Get user approval on the structure before generating copy in Phase 3.

Phase 3: Email Generation

Write the email copy directly using these guidelines.

Email Structure Formula

Every cold email follows this skeleton:

Hook (1 sentence) → Evidence (1-2 sentences) → Offer (1 sentence)

Word count targets:

  • Cold intro (Touch 1): 50-90 words
  • Follow-up (Touch 2-3): 30-50 words
  • Breakup (final touch): 20-40 words
By Personalization Tier

Tier 1 (Generic): Generate one template per touch with merge fields ({first_name}, {company}, {title}). Same template for all leads.

Tier 2 (Segment): Generate one template per segment per touch. Segments are defined by role, industry, or signal type. Swap pain points and proof points between segments.

Tier 3 (Deep): Generate unique email per lead per touch. Cap at 50 leads — recommend Tier 2 above that volume.

Hard Rules
  1. No filler openers. Never "I hope this finds you well"
  2. No "just checking in" follow-ups. Every touch adds a new reason to reply
  3. Under 150 words per email. Most should be 80-120.
  4. One CTA per email. Always low-friction.
  5. No selling in the first sentence. Lead with them, not you.
  6. Subject lines under 50 chars. No caps, no exclamation marks, no emoji.
  7. Sign off with name only. No "Best regards."
Review Loop
  1. Generate sample emails for 3-5 leads first
  2. Present to user for review
  3. Iterate until approved (max 3 rounds)
  4. Generate remaining emails after approval
Show full SKILL.md (592 more words)Show less

Phase 4: Campaign Setup

If Smartlead (MCP Automation)

Full automation via MCP tools. Execute in this order:

Step 1: Find and allocate mailboxes

mcp__smartlead__get_email_accounts

Returns all email accounts with id, from_email, from_name, daily_sent_count, is_smtp_success, is_imap_success.

To find free mailboxes (not already assigned to active campaigns):

  1. Fetch all campaigns: mcp__smartlead__get_campaigns
  2. For each campaign with status ACTIVE or STARTED, fetch its email accounts: mcp__smartlead__get_campaign_email_accounts
  3. Build a set of all email_account_id values currently assigned to active campaigns
  4. A mailbox is "free" if its id is NOT in the active set AND is_smtp_success = true AND is_imap_success = true
  5. Sort free mailboxes by daily_sent_count ascending (prefer least-used)
  6. Select the requested number of free mailboxes

If fewer free mailboxes than requested, tell the user and ask how to proceed.

Present available/selected accounts to user for confirmation.

Step 2: Create campaign

mcp__smartlead__create_campaign
  name: {campaign_name}

Save the returned campaign_id.

Step 3: Add sequence steps

mcp__smartlead__save_campaign_sequences
  campaign_id: {campaign_id}
  sequences: [
    { seq_number: 1, subject: "...", email_body: "...", seq_delay_details: { delay_in_days: 0 } },
    { seq_number: 2, subject: "...", email_body: "...", seq_delay_details: { delay_in_days: 4 } },
    { seq_number: 3, subject: "...", email_body: "...", seq_delay_details: { delay_in_days: 7 } }
  ]

Merge variable mapping: Convert {first_name} → {{first_name}}, {company} → {{company}} (Smartlead uses double-brace syntax).

Note: Blank subject on emails 2+ makes them send as replies in the same thread.

Step 4: Import leads (batch 100)

mcp__smartlead__add_leads_to_campaign
  campaign_id: {campaign_id}
  lead_list: [{ email: "...", first_name: "...", last_name: "...", company_name: "...", ... }]

Smartlead accepts max 100 leads per call. Chunk the list and call for each batch. Extra columns become custom_fields.

Step 5: Assign sending accounts

mcp__smartlead__add_email_accounts_to_campaign
  campaign_id: {campaign_id}
  email_account_ids: [...]

Step 6: Set schedule

mcp__smartlead__update_campaign_schedule
  campaign_id: {campaign_id}
  schedule: {
    timezone: "America/New_York",
    days_of_the_week: [1, 2, 3, 4, 5],
    start_hour: "08:00",
    end_hour: "18:00",
    min_time_btw_emails: 10,
    max_new_leads_per_day: 20
  }

days_of_the_week: 0=Sunday, 1=Monday, ..., 6=Saturday.

Step 7: Configure settings

mcp__smartlead__update_campaign_settings
  campaign_id: {campaign_id}
  settings: {
    track_settings: [],
    stop_lead_settings: "REPLY_TO_AN_EMAIL",
    send_as_plain_text: false,
    follow_up_percentage: 100
  }

Allowed track_settings: DONT_TRACK_EMAIL_OPEN, DONT_TRACK_LINK_CLICK, DONT_TRACK_REPLY_TO_AN_EMAIL Allowed stop_lead_settings: REPLY_TO_AN_EMAIL, CLICK_ON_A_LINK, OPEN_AN_EMAIL

If CSV-Based Tool (Instantly, Lemlist, Apollo, Other)

Step 1: Generate CSV

Columns depend on personalization tier:

Tier 1 (same template for all):

  • CSV columns: email, first_name, last_name, company, title, custom_field_1 (signal/hook)
  • Separate file with sequence templates (subjects + bodies with merge fields)

Tier 2/3 (per-segment or per-lead emails):

  • CSV columns: email, first_name, last_name, company, title, touch_1_subject, touch_1_body, touch_2_subject, touch_2_body, touch_3_subject, touch_3_body

Step 2: Save file

Save to the current working directory:

{campaign-name}-{YYYY-MM-DD}.csv

Step 3: Provide tool-specific import instructions

Instantly:

  • Upload CSV → Sequences → Create new sequence
  • Map columns: Email → email, First Name → first_name, etc.
  • Paste sequence templates into each step
  • Set delays between steps

Lemlist:

  • People → Import → Upload CSV
  • Map custom variables to columns
  • Create campaign → add email steps → insert variables

Apollo:

  • Sequences → Create Sequence → add email steps
  • Contacts → Import → Upload CSV
  • Add imported contacts to sequence

Other / Manual:

  • Provide the CSV path and explain the column structure
  • Ask user what format their tool expects, adjust if needed

Phase 5: Review & Launch

Present campaign summary:

Campaign: {name}
Leads: {count}
Sequence: {touches} touches over {days} days
Sending: {accounts} accounts × {daily_limit}/day = {daily_volume} emails/day
Estimated completion: {date}
Tool: {smartlead/instantly/etc.}
Hard Approval Gate

Do NOT activate the campaign without explicit user confirmation. Present the summary, then ask: "Ready to launch? Type 'yes' to activate."

  • Smartlead: mcp__smartlead__update_campaign_status → set status to START
  • CSV tools: Tell user the file is ready for import, provide the file path

Smartlead API Reference

All endpoints use base URL https://server.smartlead.ai/api/v1 with ?api_key= query param.

EndpointMethodPurpose
/campaigns/createPOSTCreate a new campaign
/campaignsGETList all campaigns
/campaigns/{id}GETGet campaign by ID
/campaigns/{id}/schedulePOSTSet campaign schedule
/campaigns/{id}/settingsPOSTUpdate tracking/stop settings
/campaigns/{id}/sequencesPOSTSave email sequences
/campaigns/{id}/leadsPOSTAdd leads (max 100 per call)
/campaigns/{id}/email-accountsGETList mailboxes on a campaign
/campaigns/{id}/email-accountsPOSTAssign mailboxes to campaign
/campaigns/{id}/statusPOSTChange campaign status (START/PAUSED/STOPPED)
/campaigns/{id}/analyticsGETTop-level campaign analytics
/email-accounts/GETList all email accounts (offset/limit)

Cost

ComponentCost
Smartlead campaign setupFree (API included with Smartlead plan)
CSV exportFree
Email copy generationFree (LLM reasoning)

Error Handling

ErrorFix
SMARTLEAD_API_KEY not setAsk user to add it to .env or export it
Smartlead rate limit (429)Wait 2 seconds and retry
Lead upload failsCheck email format, retry batch
No free mailboxesShow all accounts, ask user which to use
Campaign creation failsCheck API key validity

© gooseworks-ai, 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 1 other file in skills/outreach/capabilities/cold-email-outreach of gooseworks-ai/goose-skills.

  • SKILL.md
  • skill.meta.json

Open the folder on GitHubat commit c650c6d

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in gooseworks-ai/goose-skills, which our catalogue first saw on October 7, 2026.

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.

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Cold Email Outreach this skillgooseworks-ai/goose-skills1.2k1 repos~3.4kAutomated safety check: NotesMIT
Disco Likegrowthenginenowoslawski/coldoutboundskills753—~1.7kAutomated safety check: PassMIT
Sales OsromangojiberryAI/gojiberryai-sales-os139—~2kAutomated safety check: PassMIT
Vibe Prospectinghashgraph-online/awesome-codex-plugins1.3k1 repos~2.8kAutomated safety check: PassApache-2.0
Cold Email Local Businessgmapsscraper/google-maps-agent-skills132—~1.2kAutomated safety check: PassMIT
Blitz List Buildergrowthenginenowoslawski/coldoutboundskills753—~2kAutomated safety check: PassMIT

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Works with

Categories

Questions about Cold Email Outreach

What does Cold Email Outreach do?

End-to-end cold email outreach orchestration. An agent skill from gooseworks-ai/goose-skills. Cold Email Outreach is an agent skill from gooseworks-ai/goose-skills. End-to-end cold email outreach orchestration.

When should I use Cold Email Outreach?

Cold Email Outreach fits situations like: tasks that involve Cold outreach; tasks that involve CSV and tabular files; tasks that involve GraphQL.

How do I install Cold Email Outreach in Claude Code?

Run `npx skills add gooseworks-ai/goose-skills --skill cold-email-outreach -a claude-code`. Or copy the skill folder (skills/outreach/capabilities/cold-email-outreach in gooseworks-ai/goose-skills) 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 gooseworks-ai/goose-skills --skill cold-email-outreach -a codex`. Or copy the skill folder (skills/outreach/capabilities/cold-email-outreach in gooseworks-ai/goose-skills) 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 gooseworks-ai/goose-skills --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 credentials named SMARTLEAD_API_KEY. Our summary lists: A credential in SMARTLEAD_API_KEY.

Does Cold Email Outreach 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 Cold Email Outreach safe to install?

Our automated static check of SKILL.md found notes only (mentions a .env file), nothing it rates as a warning. 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 (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Cold Email Outreach use?

About 3.4k tokens (SKILL.md is roughly 14k 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: Disco Like (growthenginenowoslawski/coldoutboundskills, 753 stars), Sales Os (romangojiberryAI/gojiberryai-sales-os, 139 stars), Vibe Prospecting (hashgraph-online/awesome-codex-plugins, 1.3k stars) and Cold Email Local Business (gmapsscraper/google-maps-agent-skills, 132 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?

gooseworks-ai (a GitHub organization) maintains it in gooseworks-ai/goose-skills, which has 1,240 GitHub stars. The repository holds 273 skills in this directory. The repository was last updated on October 8, 2026.

Source: gooseworks-ai/goose-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.