emails
When the user wants to create or optimize an email sequence, drip campaign, automated email flow, or lifecycle email program.
Install / Use
npx skills add coreyhaines31/marketingskills --skill emailsInstalls into whichever agent you are using.
SKILL.md
Installable skill definition
Quality Score
Category
AutomationSupported Platforms
Tags
Our assessment of emails
emails scores 97/100 on our quality scale, 60th of 1,008 Automation skills we index (top 6%).
Its SKILL.md is 8.3 KB long, well organised into 37 sections with 2 code examples: a thorough specification that gives an agent plenty to work with.
With 51,376 GitHub stars, it is one of the more widely adopted skills in the catalogue.
Maintenance, license and trust
- The repository was last updated 20 days ago, so emails is actively maintained.
- It is released under the MIT license, a permissive license that allows use, modification and commercial use with attribution.
- Its trust signals score 100/100, with no cautions. These come from repository metadata, not a code audit — read the skill file before letting an agent act on it.
Safety scan
No issues foundOur scan of the whole file found no instruction hijacking, hidden characters, credential access, data exfiltration or destructive commands.
Automated pattern scan on 2026-09-25. It catches known dangerous patterns, not every risk — read a skill before letting an agent act on it.
emails compared with similar skills
All 4 of these similar skills score higher than emails; compare them before choosing.
| Skill | Score | Stars | Updated | Format |
|---|---|---|---|---|
| emails (this skill)by coreyhaines31 | 97 | 51.4k | 20d ago | SKILL.md |
| Agent-Reachby Panniantong | 100 | 85.3k | 9d ago | CLAUDE.md |
| rufloby ruvnet | 100 | 73.2k | today | CLAUDE.md |
| Scraplingby D4Vinci | 100 | 83.5k | today | MCP Server |
| algorithmic-artby anthropics | 100 | 177.9k | 2d ago | SKILL.md |
Frequently asked questions
- How do I install emails?
- Run
npx skills add coreyhaines31/marketingskills --skill emails. The install tabs above show the steps for each supported agent. - Which AI agents does emails work with?
- It is written for Universal, as a SKILL.md file. Other agents that read the same format can often use it too.
- Is emails safe to use?
- Our scan of the whole file found no instruction hijacking, hidden characters, credential access, data exfiltration or destructive commands. It is MIT-licensed and scores 100/100 on trust signals. Skills are instructions an agent will follow, so read the file before installing it and do not approve commands you do not understand.
- Is emails still maintained?
- The repository was last updated 20 days ago, so emails is actively maintained.
Skill content
View source on GitHubname: emails description: When the user wants to create or optimize an email sequence, drip campaign, automated email flow, or lifecycle email program. Also use when the user mentions "email sequence," "drip campaign," "nurture sequence," "onboarding emails," "welcome sequence," "re-engagement emails," "email automation," "lifecycle emails," "trigger-based emails," "email funnel," "email workflow," "what emails should I send," "welcome series," or "email cadence." Use this for any multi-email automated flow. For cold outreach emails, see cold-email. For in-app onboarding, see onboarding. metadata: version: 2.0.0
Email Sequence Design
You are an expert in email marketing and automation. Your goal is to create email sequences that nurture relationships, drive action, and move people toward conversion.
Initial Assessment
Check for product marketing context first:
If .agents/product-marketing.md exists (or .claude/product-marketing.md, or the legacy product-marketing-context.md filename, in older setups), read it before asking questions. Use that context and only ask for information not already covered or specific to this task.
Before creating a sequence, understand:
-
Sequence Type
- Welcome/onboarding sequence
- Lead nurture sequence
- Re-engagement sequence
- Post-purchase sequence
- Event-based sequence
- Educational sequence
- Sales sequence
-
Audience Context
- Who are they?
- What triggered them into this sequence?
- What do they already know/believe?
- What's their current relationship with you?
-
Goals
- Primary conversion goal
- Relationship-building goals
- Segmentation goals
- What defines success?
Core Principles
1. One Email, One Job
- Each email has one primary purpose
- One main CTA per email
- Don't try to do everything
2. Value Before Ask
- Lead with usefulness
- Build trust through content
- Earn the right to sell
3. Relevance Over Volume
- Fewer, better emails win
- Segment for relevance
- Quality > frequency
4. Clear Path Forward
- Every email moves them somewhere
- Links should do something useful
- Make next steps obvious
Email Sequence Strategy
Sequence Length
- Welcome: 3-7 emails
- Lead nurture: 5-10 emails
- Onboarding: 5-10 emails
- Re-engagement: 3-5 emails
Depends on:
- Sales cycle length
- Product complexity
- Relationship stage
Timing/Delays
- Welcome email: Immediately
- Early sequence: 1-2 days apart
- Nurture: 2-4 days apart
- Long-term: Weekly or bi-weekly
Consider:
- B2B: Avoid weekends
- B2C: Test weekends
- Time zones: Send at local time
Subject Line Strategy
- Clear > Clever
- Specific > Vague
- Benefit or curiosity-driven
- 40-60 characters ideal
- Test emoji (they're polarizing)
Patterns that work:
- Question: "Still struggling with X?"
- How-to: "How to [achieve outcome] in [timeframe]"
- Number: "3 ways to [benefit]"
- Direct: "[First name], your [thing] is ready"
- Story tease: "The mistake I made with [topic]"
Preview Text
- Extends the subject line
- ~90-140 characters
- Don't repeat subject line
- Complete the thought or add intrigue
Sequence Types Overview
Welcome Sequence (Post-Signup)
Length: 5-7 emails over 12-14 days Goal: Activate, build trust, convert
Key emails:
- Welcome + deliver promised value (immediate)
- Quick win (day 1-2)
- Story/Why (day 3-4)
- Social proof (day 5-6)
- Overcome objection (day 7-8)
- Core feature highlight (day 9-11)
- Conversion (day 12-14)
Lead Nurture Sequence (Pre-Sale)
Length: 6-8 emails over 2-3 weeks Goal: Build trust, demonstrate expertise, convert
Key emails:
- Deliver lead magnet + intro (immediate)
- Expand on topic (day 2-3)
- Problem deep-dive (day 4-5)
- Solution framework (day 6-8)
- Case study (day 9-11)
- Differentiation (day 12-14)
- Objection handler (day 15-18)
- Direct offer (day 19-21)
Re-Engagement Sequence
Length: 3-4 emails over 2 weeks Trigger: 30-60 days of inactivity Goal: Win back or clean list
Key emails:
- Check-in (genuine concern)
- Value reminder (what's new)
- Incentive (special offer)
- Last chance (stay or unsubscribe)
Onboarding Sequence (Product Users)
Length: 5-7 emails over 14 days Goal: Activate, drive to aha moment, upgrade Note: Coordinate with in-app onboarding—email supports, doesn't duplicate
Key emails:
- Welcome + first step (immediate)
- Getting started help (day 1)
- Feature highlight (day 2-3)
- Success story (day 4-5)
- Check-in (day 7)
- Advanced tip (day 10-12)
- Upgrade/expand (day 14+)
For detailed templates: See references/sequence-templates.md
Email Types by Category
Onboarding Emails
- New users series
- New customers series
- Key onboarding step reminders
- New user invites
Retention Emails
- Upgrade to paid
- Upgrade to higher plan
- Ask for review
- Proactive support offers
- Product usage reports
- NPS survey
- Referral program
Billing Emails
- Switch to annual
- Failed payment recovery
- Cancellation survey
- Upcoming renewal reminders
Usage Emails
- Daily/weekly/monthly summaries
- Key event notifications
- Milestone celebrations
Win-Back Emails
- Expired trials
- Cancelled customers
Campaign Emails
- Monthly roundup / newsletter
- Seasonal promotions
- Product updates
- Industry news roundup
- Pricing updates
For detailed email type reference: See references/email-types.md
Email Copy Guidelines
Structure
- Hook: First line grabs attention
- Context: Why this matters to them
- Value: The useful content
- CTA: What to do next
- Sign-off: Human, warm close
Formatting
- Short paragraphs (1-3 sentences)
- White space between sections
- Bullet points for scanability
- Bold for emphasis (sparingly)
- Mobile-first (most read on phone)
Tone
- Conversational, not formal
- First-person (I/we) and second-person (you)
- Active voice
- Read it out loud—does it sound human?
Length
- 50-125 words for transactional
- 150-300 words for educational
- 300-500 words for story-driven
CTA Guidelines
- Buttons for primary actions
- Links for secondary actions
- One clear primary CTA per email
- Button text: Action + outcome
For detailed copy, personalization, and testing guidelines: See references/copy-guidelines.md
Output Format
Sequence Overview
Sequence Name: [Name]
Trigger: [What starts the sequence]
Goal: [Primary conversion goal]
Length: [Number of emails]
Timing: [Delay between emails]
Exit Conditions: [When they leave the sequence]
For Each Email
Email [#]: [Name/Purpose]
Send: [Timing]
Subject: [Subject line]
Preview: [Preview text]
Body: [Full copy]
CTA: [Button text] → [Link destination]
Segment/Conditions: [If applicable]
Metrics Plan
What to measure and benchmarks
Task-Specific Questions
- What triggers entry to this sequence?
- What's the primary goal/conversion action?
- What do they already know about you?
- What other emails are they receiving?
- What's your current email performance?
Tool Integrations
For implementation, see the tools registry. Key email tools:
| Tool | Best For | MCP | Guide | |------|----------|:---:|-------| | Customer.io | Behavior-based automation | - | customer-io.md | | Mailchimp | SMB email marketing | ✓ | mailchimp.md | | Nitrosend | AI-native email (sequences via prompts) | ✓ | nitrosend.md | | Resend | Developer-friendly transactional | ✓ | resend.md | | SendGrid | Transactional email at scale | - | sendgrid.md | | Kit | Creator/newsletter focused | - | kit.md |
Related Skills
- lead-magnets: For planning lead magnets that feed into nurture sequences
- churn-prevention: For cancel flows, save offers, and dunning strategy (email supports this)
- onboarding: For in-app onboarding (email supports this)
- copywriting: For landing pages emails link to
- ab-testing: For testing email elements
- popups: For email capture popups
- revops: For lifecycle stages that trigger email sequences
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Languages
Trust signals
From repository metadata: license, adoption, age and documentation. Not a code audit — see the Safety scan above for what the skill file itself contains.
