/email-sequence

name: email-sequence
version: 1.0.0
description: "メールシーケンス、ステップメール、ドリップキャンペーンの設計・最適化を行うスキル。 「メール設計」「ステップメール作成」「ウェルカムメール」等のリクエストで発動。 For in-app onboarding, see onboarding-cro."
triggers:
  - email-sequence
  - メール設計
  - ステップメール
  - ドリップキャンペーン
  - ウェルカムメール
  - メール自動化
  - nurture sequence

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 `.claude/product-marketing-context.md` exists, 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:

1. **Sequence Type**

• Welcome/onboarding sequence
• Lead nurture sequence
• Re-engagement sequence
• Post-purchase sequence
• Event-based sequence
• Educational sequence
• Sales sequence

2. **Audience Context**

• Who are they?
• What triggered them into this sequence?
• What do they already know/believe?
• What's their current relationship with you?

3. **Goals**

• Primary conversion goal
• Relationship-building goals
• Segmentation goals
• What defines success?

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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: 1. Welcome + deliver promised value (immediate) 2. Quick win (day 1-2) 3. Story/Why (day 3-4) 4. Social proof (day 5-6) 5. Overcome objection (day 7-8) 6. Core feature highlight (day 9-11) 7. 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: 1. Deliver lead magnet + intro (immediate) 2. Expand on topic (day 2-3) 3. Problem deep-dive (day 4-5) 4. Solution framework (day 6-8) 5. Case study (day 9-11) 6. Differentiation (day 12-14) 7. Objection handler (day 15-18) 8. 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: 1. Check-in (genuine concern) 2. Value reminder (what's new) 3. Incentive (special offer) 4. 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: 1. Welcome + first step (immediate) 2. Getting started help (day 1) 3. Feature highlight (day 2-3) 4. Success story (day 4-5) 5. Check-in (day 7) 6. Advanced tip (day 10-12) 7. Upgrade/expand (day 14+)

**For detailed templates**: See [references/sequence-templates.md](references/sequence-templates.md)

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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](references/email-types.md)

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Email Copy Guidelines

Structure

1. **Hook**: First line grabs attention 2. **Context**: Why this matters to them 3. **Value**: The useful content 4. **CTA**: What to do next 5. **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