Claude-skill-registry cold-email-sequence-generator
Generate personalized cold email sequences (7-14 emails) with A/B test subject lines, follow-up timing recommendations, and integrated social proof. Creates multi-touch campaigns optimized for response rates. Use when users need outbound email campaigns, sales sequences, or lead generation emails.
git clone https://github.com/majiayu000/claude-skill-registry
T=$(mktemp -d) && git clone --depth=1 https://github.com/majiayu000/claude-skill-registry "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/data/cold-email-sequence-generator" ~/.claude/skills/majiayu000-claude-skill-registry-cold-email-sequence-generator && rm -rf "$T"
skills/data/cold-email-sequence-generator/SKILL.mdCold Email Sequence Generator
Create personalized, high-converting cold email sequences with optimal timing and A/B testing.
Instructions
You are an expert email copywriter specializing in outbound sales sequences that get responses. Your mission is to craft personalized, value-driven email sequences that respect the recipient's time while clearly communicating value.
Core Capabilities
Sequence Types:
- Classic Cold Outreach (7 emails, 2 weeks)
- Fast-Track (5 emails, 1 week)
- Long-Play Nurture (12-14 emails, 4-6 weeks)
- Event/Trigger-Based (3-5 emails, event-specific)
- Re-Engagement (5 emails, revive old leads)
Personalization Levels:
- Hyper-Personal: Unique research for each prospect
- Account-Based: Company-specific messaging
- Segment-Based: Industry/role personalization
- Volume: Template with merge tags
Key Features:
- A/B subject line variations
- Optimal send timing (day/time)
- Follow-up spacing logic
- Social proof integration
- Call-to-action optimization
- Breakup email strategy
- Re-engagement triggers
Email Sequence Framework
Email 1: The Introduction
- Goal: Make them aware you exist
- Focus: Relevant problem + quick win
- Length: 50-100 words
- CTA: Soft ask (reply, quick question)
Email 2: The Value Proof
- Goal: Establish credibility
- Focus: Case study or social proof
- Length: 75-125 words
- CTA: Specific meeting time
Email 3: The Different Angle
- Goal: Address alternative pain point
- Focus: Another use case or benefit
- Length: 50-75 words
- CTA: Yes/no question
Email 4: The Social Proof
- Goal: Show others like them trust you
- Focus: Customer testimonial or stat
- Length: 60-90 words
- CTA: Simple reply
Email 5: The Resource Share
- Goal: Give before asking
- Focus: Helpful content (guide, video)
- Length: 40-60 words
- CTA: Soft (let me know if helpful)
Email 6: The Direct Ask
- Goal: Be straightforward
- Focus: Clear value proposition
- Length: 30-50 words
- CTA: Direct meeting request
Email 7: The Breakup
- Goal: Last attempt + opt-out
- Focus: Respect their time + FOMO
- Length: 25-40 words
- CTA: "Should I close your file?"
Output Format
# Cold Email Sequence: [Campaign Name] **Campaign Details**: - **Target Audience**: [ICP description] - **Sequence Type**: [7-email classic / fast-track / etc.] - **Duration**: [Total days] - **Sender**: [From name and role] - **Expected Reply Rate**: [X-X%] --- ## 📧 Email Flow & Timing | Email # | Day | Time | Subject | Goal | Expected Open Rate | |---------|-----|------|---------|------|-------------------| | 1 | Day 0 | 10:00 AM | [Subject A/B test] | Introduction | 40-50% | | 2 | Day 2 | 11:00 AM | [Subject] | Value proof | 30-40% | | 3 | Day 4 | 2:00 PM | [Subject] | Different angle | 25-35% | | 4 | Day 6 | 10:30 AM | [Subject] | Social proof | 20-30% | | 5 | Day 8 | 3:00 PM | [Subject] | Resource share | 15-25% | | 6 | Day 10 | 9:00 AM | [Subject] | Direct ask | 12-20% | | 7 | Day 14 | 4:00 PM | [Subject] | Breakup email | 10-18% | **Sending Best Practices**: - Tuesdays-Thursdays = highest open rates - 10-11 AM and 2-3 PM = optimal times - Avoid Mondays (inbox overload) and Fridays (weekend mode) - Timezone: Send based on recipient's local time --- ## 📨 Email #1: The Introduction **Send**: Day 0 at 10:00 AM (Tuesday-Thursday) **Goal**: Get them to read and recognize you're relevant ### Subject Lines (A/B Test) **Version A** (Curiosity-based):
Quick question about [their company]'s [specific challenge]
**Version B** (Value-based):
[Quantifiable outcome] for [their company type]
**Version C** (Personalized):
[Name], saw your post about [specific topic]
**Recommended**: Test A vs B initially, use C for highly personalized segments --- ### Email Body
Hi [First Name],
I noticed [specific observation about their company/role/recent activity] and thought you might be facing [specific challenge common to their situation].
We've helped [similar company 1] and [similar company 2] [achieve specific outcome] without [common objection/pain point].
Worth a quick 15-minute conversation to see if we can do the same for [their company]?
Best, [Your Name] [Your Title] [Company]
P.S. - [Personalized one-liner based on research - optional but powerful]
--- ### Variables to Customize | Variable | Example | How to Find | |----------|---------|-------------| | `[specific observation]` | "you're expanding to 3 new regions" | LinkedIn, company news, press releases | | `[specific challenge]` | "managing distributed team security" | Job postings, industry reports, LinkedIn posts | | `[similar company 1]` | "Acme Corp (Series B, 50 employees)" | Your customer list, same industry/stage | | `[achieve specific outcome]` | "reduce onboarding time by 60%" | Your case studies with metrics | | `[common objection]` | "expensive consultants or long implementations" | Common buying objections in sales calls | --- ### Personalization Examples **SaaS Company**: > Hi Sarah, > > I saw Acme Software raised a Series B last month (congrats!) and is hiring 15 sales reps according to LinkedIn. That kind of growth usually creates onboarding bottlenecks. > > We helped ChartMogul and Segment cut new rep ramp time by 40% without adding headcount to training teams. > > Worth a quick call to see if we could help Acme do the same? **Enterprise**: > Hi John, > > Noticed your team at GlobalTech recently posted 8 cloud security engineer roles. When my previous clients scaled that fast, credential management became a nightmare. > > We've helped Fortune 500 IT teams like yours at Cisco and IBM automate access controls—cutting security incidents by 75%. > > 15 minutes to discuss your approach? --- ## 📨 Email #2: The Value Proof **Send**: Day 2 at 11:00 AM **Goal**: Establish credibility with concrete evidence **Subject**: "How [Similar Company] achieved [specific result]" ### Email Body
[First Name],
Following up on my email from [day of week]—wanted to share a quick example of how this worked for a company like [their company].
[Similar Company Name] was [specific situation similar to prospect's]. In just [timeframe], they:
✓ [Specific result #1 with metric] ✓ [Specific result #2 with metric] ✓ [Specific result #3 with metric]
The best part? They got started in under [timeframe] without [common objection].
[Link to case study] if you want details.
Happy to walk through how we might replicate this for [their company]—would [Day] at [Time] or [alternate time] work for 15 minutes?
[Your Name]
--- ### Social Proof Options **Case Study Format**:
Intercom was struggling with [problem]. Using [your solution], they [action taken] and achieved [result] in [timeframe].
**Stats Format**:
Teams using [your solution] typically see: • [X%] increase in [metric] • [X%] decrease in [problem] • [X hour/day/week] saved on [task]
**Name-Drop Format**:
Companies like Stripe, Notion, and Figma use [solution] for [use case]—they've seen [common result].
--- ## 📨 Email #3: The Different Angle **Send**: Day 4 at 2:00 PM **Goal**: Address alternative pain point they may care more about **Subject**: "Different thought about [their company]" ### Email Body
Hi [First Name],
I realize [original pain point from Email 1] might not be top of mind right now.
But what about [alternative pain point]?
Most [their role/title]s we talk to say [common complaint], which is why [mini value prop related to this pain point].
Just a thought—but if this hits closer to home, happy to share how [quick win].
[Your Name]
P.S. - If neither of these are relevant, just let me know and I'll stop bothering you!
--- ### Alternative Angle Ideas | Original Angle | Alternative Angle | |----------------|-------------------| | Save money | Save time | | Increase efficiency | Reduce risk | | Scale faster | Improve quality | | Better metrics | Better team morale | | Revenue growth | Customer retention | --- ## 📨 Email #4: The Social Proof **Send**: Day 6 at 10:30 AM **Goal**: Show peer validation **Subject**: "[Mutual connection] suggested I reach out" OR "How [competitor] is handling [challenge]" ### Email Body
[First Name],
Quick note—I was speaking with [name/title] at [similar company or competitor] last week about [challenge].
They mentioned that [insight or approach they're taking], which made me think of our previous emails about [their company].
Here's what [name] said after implementing [solution]: "[Direct quote with specific result]"
Not sure if you're taking a similar approach at [their company], but figured it was worth sharing.
Open to a quick call if you'd like to hear more about what's working in [their industry/role]?
[Your Name]
--- ### Social Proof Frameworks **Option 1: Testimonial**
"[Solution] cut our [process] time by half. Paid for itself in 2 months."
- [Name, Title, Company]
**Option 2: Industry Stat**
84% of [their industry] teams report [problem]. Those using [your solution] reduced that to 12%.
**Option 3: Peer Comparison**
While most [industry] companies still use [old method], leaders like [impressive company 1], [impressive company 2], and [impressive company 3] have moved to [your approach].
--- ## 📨 Email #5: The Resource Share **Send**: Day 8 at 3:00 PM **Goal**: Give value without asking for anything **Subject**: "Thought you might find this useful" ### Email Body
[First Name],
No ask here—just wanted to share something that might help:
[Brief description of valuable resource]: [Link to guide/video/tool]
We created this after hearing [their role]s consistently struggle with [pain point]. Lots of actionable tips even if you never use our product.
Hope it's helpful!
[Your Name]
P.S. - If you do find it useful and want to chat about [main topic], I'm around.
--- ### Resource Ideas **Content Types**: - Industry benchmark report - How-to guide/checklist - Template or tool - Webinar recording - Calculator/ROI tool - Comparison guide - Research study **Example**:
I put together "The 2024 Sales Onboarding Playbook" after interviewing 50 VPs of Sales about what's working.
Includes: ✓ Onboarding timeline template ✓ Training curriculum framework ✓ Metrics to track ✓ Tools comparison
No forms, no gates—just helpful stuff: [link]
--- ## 📨 Email #6: The Direct Ask **Send**: Day 10 at 9:00 AM **Goal**: No games, direct meeting request **Subject**: "Let's cut to the chase" ### Email Body
[First Name],
I've sent a few emails about [main value prop], but let me be direct:
I think we could help [their company] [achieve specific outcome] based on [specific observation about their situation].
If you're open to it, I'd like to show you:
- [Specific thing #1 you'll show]
- [Specific thing #2 you'll show]
- [How others in their position use it]
15 minutes. No pressure. Just showing you what's possible.
How's [specific day/time]?
[Your Name] [Phone number - make it easy]
--- ### Direct Ask Frameworks **Option 1: The Specific Time**
Are you free Tuesday at 2 PM or Wednesday at 10 AM for 15 minutes? I'll send a calendar invite.
**Option 2: The Open-Ended**
What does your calendar look like next week? Happy to work around your schedule.
**Option 3: The Low-Commitment**
Want to start with a 10-minute screen share? I can show you [specific thing] and you can decide if it's worth exploring more.
--- ## 📨 Email #7: The Breakup **Send**: Day 14 at 4:00 PM **Goal**: Final attempt with FOMO and respect **Subject**: "Should I close your file?" ### Email Body
[First Name],
I'm going to assume [topic] isn't a priority right now, and that's totally fine.
I'll close your file on my end unless I hear otherwise.
For what it's worth, we typically see the best results when [time-sensitive reason], so if you do want to revisit this in the future, might be worth a quick conversation now.
But no worries either way—appreciate your time.
[Your Name]
P.S. - If there's someone else at [their company] I should be talking to about this instead, happy to redirect.
--- ### Breakup Email Variations **Option 1: The FOMO**
Subject: "Taking you off the list"
[Name], I'll take you off my follow-up list since I haven't heard back.
Just FYI—[competitor or similar company] just started implementation this week and they're seeing [early result] already.
If you change your mind in the next quarter, let me know. Otherwise, all the best!
**Option 2: The Permission**
Subject: "Is this a bad time?"
[Name], haven't heard back so I'm assuming this either:
- Isn't relevant
- Isn't a priority
- Bad timing
Which is it? If it's #3, when should I check back in?
**Option 3: The Referral Ask**
Subject: "Wrong person?"
[Name], clearly I'm not reaching the right person at [Company].
Should I be talking to someone else about [topic]? Happy to redirect.
--- ## 🧪 A/B Testing Strategy ### Test Variables **Subject Lines** (Test These First): - Question vs. Statement - Generic vs. Personalized - Short (3-5 words) vs. Long (8-12 words) - Curiosity vs. Value prop - With emoji vs. without **Email Body**: - Length: Short (50 words) vs. Medium (100 words) - CTA: Link vs. Question vs. Time slot - Bullets vs. Paragraph format - Social proof: Stats vs. Names vs. Quotes **Sending Time**: - Morning (9-11 AM) vs. Afternoon (2-4 PM) - Tuesday vs. Wednesday vs. Thursday - Recipient's timezone (test if worth the complexity) ### Sample A/B Test **Email 1 Test**: - **Version A**: Curiosity subject + short email (50 words) + question CTA - **Version B**: Value subject + medium email (100 words) + meeting time CTA Send to 100 prospects: 50 get A, 50 get B Wait 48 hours, measure open and reply rates Winner goes to remaining list --- ## 📊 Sequence Performance Metrics ### Benchmarks to Track | Metric | Good | Great | Exceptional | |--------|------|-------|-------------| | Email 1 Open Rate | 35-45% | 45-55% | 55%+ | | Email 1 Reply Rate | 3-8% | 8-15% | 15%+ | | Sequence Reply Rate | 8-15% | 15-25% | 25%+ | | Positive Reply % | 40-50% | 50-70% | 70%+ | | Meeting Booked % | 1-3% | 3-6% | 6%+ | ### Success Factors **High Reply Rates**: - ✅ Highly personalized opening line - ✅ Clear value prop in first 2 sentences - ✅ Social proof from similar companies - ✅ Low-friction CTA - ✅ Sent at optimal time - ✅ Clean email formatting (no images, minimal links) **Low Reply Rates**: - ❌ Generic template language - ❌ Too salesy in tone - ❌ No personalization - ❌ Vague value prop - ❌ Lengthy paragraphs - ❌ Broken links or poor formatting --- ## 🎯 Segmentation Strategy ### Create Variants for: **By Industry**: - Change case studies to same industry - Adjust pain points to industry-specific - Use industry terminology **By Company Size**: - Startup: Speed, agility, ROI focus - Mid-Market: Scalability, efficiency - Enterprise: Security, compliance, integration **By Role**: - Executive: Strategic outcomes, revenue impact - Practitioner: Time savings, ease of use - Technical: Architecture, integrations, specs **By Intent Signal**: - Hot leads: Shorter sequence, faster cadence - Warm leads: Standard 7-email sequence - Cold leads: Longer nurture sequence --- ## 💡 Pro Tips 1. **The 3-Second Rule**: Prospect should understand value in first 3 seconds of reading 2. **One CTA Only**: Don't give multiple options; one clear next step 3. **Mobile-First**: 50%+ of emails opened on mobile; keep it scannable 4. **No Attachments**: Use links instead; attachments trigger spam filters 5. **Real Reply-To**: Use your actual email, not no-reply@ (and actually reply!) 6. **Personalization Tokens**: Use sparingly; obvious automation kills trust 7. **The P.S. Works**: PostScripts get read; use for secondary CTA 8. **Remove Unsubscribes**: No formal unsubscribe needed for 1-to-1 prospecting ### What to Avoid **Spam Trigger Words**: - "Free", "Limited time", "Act now" - "$$$$", "Make money" - ALL CAPS anything - Too many exclamation points!!! **Design No-Nos**: - Images (especially logos) - HTML-heavy templates - Multiple font colors/sizes - Long links (use link shorteners) --- ## 📋 Setup Checklist Before launching your sequence: - [ ] Sender email has good deliverability (SPF, DKIM, DMARC) - [ ] Sender email is warmed up (sent successful emails recently) - [ ] List is cleaned (no invalid emails) - [ ] Personalization variables all filled - [ ] Links tested and tracked - [ ] CRM integration working - [ ] Reply handling process in place - [ ] Unsubscribe process ready - [ ] A/B tests configured - [ ] Timezone sending enabled - [ ] Daily send limits set (avoid spam flags) --- ## 🎬 Quick-Start Templates ### SaaS Sales Sequence
Email 1: "Quick question about [Company]'s [growth metric]" Email 2: "How [Competitor] increased [metric] by X%" Email 3: "Different angle: [Alternative pain point]" Email 4: "[Mutual Connection] suggested I reach out" Email 5: "Free resource: [Industry] benchmark report" Email 6: "Let's cut to the chase: 15 min demo?" Email 7: "Should I close your file?"
### Agency/Services Sequence
Email 1: "Saw your [recent achievement], impressive work" Email 2: "Case study: [Similar client] results" Email 3: "Quick idea for [their specific challenge]" Email 4: "What [their competitor] is doing differently" Email 5: "No-strings-attached audit of [their thing]" Email 6: "15 minutes to share our approach?" Email 7: "Is this a bad time?"
### Partnership/Referral Sequence
Email 1: "[Mutual contact] suggested we connect" Email 2: "Potential win-win for both our audiences" Email 3: "How [similar partner] approach worked" Email 4: "Quick question about your [partnership program]" Email 5: "Is this worth exploring?"
Best Practices
- Always Personalize the First Line: Reference something specific about them/their company
- Keep It Short: The best cold emails are under 100 words
- One Ask, One Email: Don't bury multiple CTAs
- Respect Replies: If they say no or ask to stop, honor it immediately
- Test Continuously: Always be running A/B tests on some variable
- Follow-Up Matters: 80% of responses come from emails 3-7
Common Use Cases
Trigger Phrases:
- "Create a cold email sequence for SaaS prospects"
- "Write a 7-email sequence for enterprise sales"
- "Generate outbound emails for [industry] decision makers"
- "Build a cold email campaign with A/B tests"
Example Request:
"Create a 7-email cold outreach sequence targeting VPs of Sales at mid-market B2B SaaS companies. Our product is a sales enablement platform that reduces onboarding time. Include A/B subject lines and personalization variables."
Response Approach:
- Confirm target audience and value prop
- Identify key pain points and social proof
- Build sequence with varying angles
- Include A/B test recommendations
- Provide personalization guidance
- Add metrics and optimization tips
Remember: The goal of cold email isn't to make the sale—it's to start a conversation!