Email Sequence skill

Email Sequence is an agent skill for AI coding assistants (Claude Code, OpenClaw, Cursor, Codex). Lifecycle email sequences — welcome/onboarding/nurture/re-engagement/abandoned-cart/winback flows with deliverability and Google+Yahoo 2024 bulk-sender compliance. Use when user mentions drip campaign, nurture, lifecycle emails, or email automation. Install with: npx skills-ws install email-sequence.

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Email Sequences — Expert Playbook

When to Use This Skill

  • Building welcome/onboarding email sequences
  • Creating nurture drips for leads
  • Designing re-engagement or win-back campaigns
  • Cart abandonment recovery flows
  • Improving open rates, click rates, or deliverability
  • Email automation architecture

Welcome Sequence — 7-Email Template

The welcome sequence is the highest-performing automation you'll build. Average open rates: 50-80% (vs 20-25% for regular emails).

Email 1: Instant Welcome (Delay: 0 — send immediately)

Subject: Welcome to [Product] — here's what happens next
Preview: Your account is ready. Here's your first step.

BODY:
- Thank them for signing up
- Set expectations: what they'll receive and how often
- ONE clear first action (not three, not five — one)
- Link to getting started guide or key feature

CTA: [Take Your First Step]

Email 2: Quick Win (Delay: 1 day)

Subject: Do this one thing to get 10x more from [Product]
Preview: Takes 2 minutes. Changes everything.

BODY:
- Identify the single action that correlates with retention
- Step-by-step instructions (3-5 steps max)
- Screenshot or GIF showing the action
- What they'll experience after completing it

CTA: [Complete Setup Now]

Email 3: Social Proof (Delay: 3 days)

Subject: How [Customer] achieved [specific result] with [Product]
Preview: They started exactly where you are now.

BODY:
- Brief customer story (problem → solution → result)
- Specific numbers/outcomes
- Connect to a feature they haven't used yet
- "You can do this too" bridge

CTA: [See How They Did It] or [Try This Feature]

Email 4: Overcome Objection (Delay: 5 days)

Subject: "I wasn't sure if [Product] was right for me"
Preview: Here's what convinced [X] skeptical users.

BODY:
- Address the #1 objection/hesitation for your product
- Use a testimonial that specifically addresses this doubt
- FAQ-style answers to 2-3 common concerns
- Risk reversal (guarantee, free trial extension, etc.)

CTA: [See Full FAQ] or [Talk to Our Team]

Email 5: Feature Highlight (Delay: 7 days)

Subject: You're missing [Product]'s best feature
Preview: Most users don't discover this until month 2.

BODY:
- Highlight an underused but high-value feature
- Show the before/after of using it
- Quick tutorial or video walkthrough
- Connect to a pain point they likely have

CTA: [Try [Feature] Now]

Email 6: Engagement Check (Delay: 10 days)

Subject: Quick question about your experience so far
Preview: Hit reply — I read every response.

BODY:
- Personal tone (from founder or head of product)
- Ask one specific question about their experience
- Offer help if they're stuck
- Include a survey link (optional, 1-2 questions max)
- Mention they can reply directly

CTA: [Reply to This Email] or [Take 30-Second Survey]

Email 7: Upgrade/Next Step (Delay: 14 days)

Subject: Ready for the next level? Here's what [Plan] unlocks.
Preview: You've outgrown the basics. Time to level up.

BODY:
- Recap value they've gotten so far (use actual data if possible)
- Show what the next tier/plan/commitment unlocks
- Comparison of free vs paid (3-4 key differences)
- Time-limited offer or incentive (optional)
- Clear upgrade path

CTA: [Upgrade Now] or [See Plans]

Onboarding Drip Sequence

Behavioral Triggers

Don't just send on a timer — trigger based on actions:

SIGNUP
├── Completed setup?
│   ├── YES → Send "Power user tips" sequence
│   └── NO → Send "Complete your setup" nudge (Day 1, 3, 5)
├── Used key feature?
│   ├── YES → Send "Advanced [feature]" guide
│   └── NO → Send "[Feature] walkthrough" with video
├── Invited team?
│   ├── YES → Send "Team collaboration tips"
│   └── NO → Send "Better with your team" nudge
└── Still active at Day 7?
    ├── YES → Send "What's new" + expansion content
    └── NO → Enter re-engagement sequence

Onboarding Email Workflow (Text Diagram)

[Signup] ──→ [Welcome Email] ──→ Wait 1 day
                                      │
                              ┌───────┴───────┐
                              │               │
                        [Setup Done?]    [Setup Not Done]
                              │               │
                      [Power Tips]    [Setup Nudge #1]
                              │               │
                        Wait 2 days     Wait 2 days
                              │               │
                      [Feature Deep     [Setup Nudge #2]
                        Dive]                 │
                              │         Wait 2 days
                        Wait 3 days           │
                              │       ┌───────┴───────┐
                      [Case Study]    │               │
                              │  [Setup Done?]   [Final Nudge +
                        Wait 4 days    │          Offer Help]
                              │  [Power Tips]         │
                      [Upgrade              Wait 5 days
                        Prompt]                  │
                                          [Re-engagement
                                            Sequence]

Re-Engagement Campaign

3-Email Win-Back Sequence

Trigger: No login/activity for 30 days

Email 1: "We miss you" (Day 30)

Subject: It's been a while, [Name]
Preview: Here's what you're missing.

- Acknowledge absence without guilt
- Show 2-3 new features/updates since they left
- Single clear CTA to come back

Subject alternatives:
- "[Name], your [Product] account is waiting"
- "A lot has changed since you left"

Email 2: "Here's what's new" (Day 37)

Subject: [Product] just got a major upgrade
Preview: New features you haven't seen yet.

- Lead with the most compelling new feature
- Include a short demo video or GIF
- Social proof — "Join X users who are already using this"
- Offer: extended trial, discount, or free consultation

Email 3: "Last chance" (Day 45)

Subject: Should we close your [Product] account?
Preview: We'll keep it open if you want — just let us know.

- Direct question: "Do you still want access?"
- Remind them what they'll lose
- One-click "keep my account" button
- Option to downgrade instead of churning
- If no response → mark as churned, suppress from sequences

Cart Abandonment Sequence

3-Email Recovery Flow

Email 1: Reminder (1 hour after abandonment)

Subject: You left something behind
Preview: Your cart is saved — complete your order.

- Show cart contents with images
- Simple "Complete Purchase" CTA
- No discount yet — many convert with just a reminder
- Include customer support link

Email 2: Social Proof (24 hours)

Subject: [Product] is a customer favorite ⭐
Preview: See why X people chose [Product] this month.

- Cart contents again
- 2-3 customer reviews of the specific product
- Answer common purchase objections
- Urgency: "Items in your cart aren't reserved"

Email 3: Incentive (48-72 hours)

Subject: Here's 10% off to complete your order
Preview: Use code COMEBACK10 at checkout.

- Cart contents with discount applied
- Discount code prominently displayed
- Expiration on the offer (48 hours)
- "Need help deciding? Reply to this email"

Recovery benchmarks: Email 1 recovers 3-5% of carts, Email 2 adds 2-3%, Email 3 adds 1-2%. Total: 6-10% recovery rate.


Subject Line Formulas (25+)

Curiosity

  1. The [adjective] reason your [thing] isn't [desired outcome]
  2. I was wrong about [topic]
  3. The [thing] nobody talks about
  4. What [impressive person/company] knows that you don't
  5. Stop doing [common practice] (here's why)

Benefit-Driven

  1. How to [achieve outcome] in [timeframe]
  2. [Number] ways to [benefit] without [pain]
  3. The fastest way to [desired outcome]
  4. Get [specific result] — no [common objection] required
  5. Your [time period] plan for [outcome]

Social Proof

  1. How [customer] went from [before] to [after]
  2. [Number] [people/companies] can't be wrong
  3. "[Short testimonial quote]" — [Customer Name]
  4. Why [respected company] switched to [Product]

Urgency/Scarcity

  1. [Offer] expires at midnight
  2. Last chance: [specific benefit]
  3. Only [X] spots left for [thing]
  4. [Hours/Days] left to claim [offer]

Personal/Conversational

  1. Quick question about [their goal]
  2. [Name], can I be honest with you?
  3. This made me think of you
  4. Re: your [product/goal] (use sparingly — can feel spammy)
  5. I noticed you [action they took]

Number/List

  1. [Number] [things] I wish I knew about [topic]
  2. The [number]-minute fix for [problem]
  3. [Number] mistakes killing your [metric]
  4. [Number] tools for [outcome] (I use #[X])

Subject Line Best Practices

  • Length: 30-50 characters (6-10 words) for best open rates
  • Mobile preview: First 30 chars must hook — most people read on phones
  • Personalization: [Name] in subject line lifts opens 10-20% (don't overuse)
  • Emojis: One emoji can boost opens 5-10%. Two or more looks spammy
  • Avoid spam triggers: FREE (all caps), !!!, $$$, "Act now", "Limited time"
  • A/B test: Always test 2 subject lines. Send winner to remaining 80%

Preview Text Optimization

Preview text is the most underutilized email real estate. It appears after the subject line on mobile and desktop.

Rules

  • Length: 40-130 characters (varies by client, front-load the good stuff)
  • Don't repeat the subject line
  • Complement the subject — expand, add context, or create a 1-2 punch
  • Avoid the dreaded "View this email in your browser" default

Formula: Subject + Preview = Complete Thought

Subject: Your cart is waiting
Preview: Plus, free shipping if you order today →

Subject: 5 mistakes killing your conversion rate
Preview: #3 cost us $47K last quarter.

Subject: Welcome to [Product]
Preview: Here's your first step (takes 2 min).

Subject: Quick question, [Name]
Preview: Hit reply — I read every one.

Implementation

<!-- Hidden preview text -->
<div style="display:none;font-size:1px;color:#ffffff;line-height:1px;
max-height:0px;max-width:0px;opacity:0;overflow:hidden;">
  Your preview text here.
  <!-- Pad with whitespace to prevent body text from showing -->
  &nbsp;&zwnj;&nbsp;&zwnj;&nbsp;&zwnj;&nbsp;&zwnj;&nbsp;&zwnj;
  <!-- Repeat ~100 times -->
</div>

Send Time Optimization

General Benchmarks

DayOpen RateBest For
TuesdayHighestB2B newsletters, product updates
WednesdayHighB2B, educational content
ThursdayHighB2B, promotional
MondayMediumWeekly digests, fresh-start content
FridayLowerCasual content, weekend prep
WeekendLowest (B2B) / OK (B2C)B2C promotions, lifestyle
Time (Recipient's TZ)Best For
6:00-7:00 AMEarly readers, commuters
9:00-10:00 AMB2B desktop readers, start-of-day
12:00-1:00 PMLunch break readers (B2C especially)
5:00-6:00 PMEnd-of-day, commute home
8:00-9:00 PMB2C evening browsing

Real Optimization Strategy

  1. Start with benchmarks above
  2. A/B test send times — test 2-hour windows against each other
  3. Use send-time optimization if your ESP offers it (Mailchimp, Klaviyo, etc.)
  4. Segment by timezone — don't send at 10 AM EST to someone in PST (that's 7 AM)
  5. Check your own data — your audience may defy benchmarks

Deliverability Checklist

Email Authentication Setup

SPF (Sender Policy Framework)
; Add to your domain's DNS as a TXT record
v=spf1 include:_spf.google.com include:sendgrid.net include:mailchimp.com ~all

; Rules:
; - Only ONE SPF record per domain
; - Max 10 DNS lookups (include: counts as a lookup)
; - Use ~all (softfail) during testing, -all (hardfail) in production
; - Add all services that send email on your behalf
DKIM (DomainKeys Identified Mail)
; Your ESP provides the DKIM record. Add as CNAME or TXT:
selector1._domainkey.yourdomain.com → CNAME → provided-by-esp.dkim.example.com

; OR as TXT record:
selector1._domainkey.yourdomain.com  TXT  "v=DKIM1; k=rsa; p=MIGfMA0GCS..."

; Key points:
; - 2048-bit keys minimum
; - Rotate keys annually
; - Each ESP needs its own DKIM selector
DMARC (Domain-based Message Authentication)
; Start with monitoring mode:
_dmarc.yourdomain.com  TXT  "v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com; pct=100"

; After reviewing reports (2-4 weeks), move to quarantine:
_dmarc.yourdomain.com  TXT  "v=DMARC1; p=quarantine; rua=mailto:dmarc@yourdomain.com; pct=100"

; When confident, enforce:
_dmarc.yourdomain.com  TXT  "v=DMARC1; p=reject; rua=mailto:dmarc@yourdomain.com; pct=100"

; Migration path: none → quarantine → reject (over 4-8 weeks)

Full Deliverability Checklist

Authentication:

  • SPF record configured and valid (check: mxtoolbox.com/spf.aspx)
  • DKIM configured for all sending sources
  • DMARC set to at least p=quarantine
  • Return-Path/envelope sender aligned with From domain

Infrastructure:

  • Dedicated sending IP (if volume >100K/month) or shared IP with good reputation
  • IP warmed up properly (start with engaged users, increase volume 20-30%/day)
  • Custom tracking domain (clicks/opens) — not the ESP default
  • HTTPS on tracking domain

List Hygiene:

  • Double opt-in enabled (or confirmed opt-in)
  • Bounce management: remove hard bounces immediately
  • Soft bounces: retry 3x, then remove
  • Remove unengaged subscribers after 90 days of no opens/clicks
  • Process unsubscribes within 24 hours (CAN-SPAM requires 10 days max)
  • Never purchase email lists — ever
  • Run list through verification service before importing (NeverBounce, ZeroBounce)

Content:

  • Text-to-image ratio: at least 60% text, 40% images
  • Alt text on all images
  • Unsubscribe link visible and functional
  • Physical mailing address included (CAN-SPAM requirement)
  • Avoid spam trigger words in subject lines
  • No URL shorteners (bit.ly etc.) — flagged as suspicious
  • Test with mail-tester.com before large sends (aim for 9+/10)

Monitoring:

  • Monitor sender reputation (Google Postmaster Tools, sender score)
  • Track inbox placement rate (not just delivery rate)
  • Set up alerts for bounce rate >2%, spam complaints >0.1%
  • Review DMARC reports monthly

Segmentation Strategies

Essential Segments

SegmentDefinitionUse For
New subscribersJoined in last 14 daysWelcome sequence
Active usersOpened/clicked in last 30 daysProduct updates, feature launches
Power usersUse product daily, high engagementBeta access, referral asks, upsell
At-riskNo activity in 30-60 daysRe-engagement sequence
ChurnedNo activity in 60+ daysWin-back offer, then suppress
Free usersOn free planUpgrade sequences
Paid usersOn paid planExpansion, retention, loyalty
Trial usersIn active trialActivation sequence

Advanced Segmentation

By behavior:

  • Features used/not used → targeted feature education
  • Purchase history → cross-sell/upsell recommendations
  • Content consumed → more of what they like
  • Support tickets filed → proactive help content

By source:

  • Organic search → education-heavy sequences
  • Paid ads → faster path to conversion
  • Referral → social proof, community content
  • Product Hunt / launch → product-focused onboarding

By engagement level:

HOT (opened last 3 emails, clicked last 1)
→ Full email frequency, promotional content OK

WARM (opened 1 of last 5 emails)
→ Reduce frequency, high-value content only

COLD (no opens in last 10 emails)
→ Re-engagement sequence, then suppress

ICE COLD (no opens in 90+ days)
→ One final "should we remove you?" email, then suppress

Segmentation Automation Workflow

[New Subscriber]
├── Tag: source={utm_source}
├── Tag: plan={free|trial|paid}
├── Enter: Welcome Sequence
│
├── [Day 7] Evaluate engagement
│   ├── Opened 3+ emails → Tag: engaged
│   ├── Opened 1-2 → Tag: warm
│   └── Opened 0 → Tag: cold → Re-engagement
│
├── [Day 14] Evaluate product usage
│   ├── Used key feature → Tag: activated
│   ├── Logged in only → Tag: exploring
│   └── Never logged in → Tag: inactive → Nudge sequence
│
└── [Day 30] Evaluate conversion
    ├── Upgraded → Tag: customer → Customer sequence
    ├── Active free user → Tag: potential → Upgrade sequence
    └── Inactive → Tag: at-risk → Win-back sequence

Metrics Benchmarks by Industry

Open Rates

IndustryAverageGoodGreat
SaaS/Technology20-25%30%40%+
Ecommerce15-20%25%35%+
B2B Services20-25%30%40%+
Education25-30%35%45%+
Healthcare20-25%30%40%+
Finance20-25%28%35%+
Media/Publishing20-25%30%40%+
Nonprofit25-30%35%45%+

Note: Apple MPP (Mail Privacy Protection) inflates open rates by 15-30%. Track click rates as the more reliable metric.

Click Rates

IndustryAverageGoodGreat
SaaS/Technology2-3%4%6%+
Ecommerce2-3%4%5%+
B2B Services2-3%4%6%+
Education3-4%5%7%+
Media/Publishing3-5%6%8%+

Other Key Metrics

MetricHealthy RangeAction If Below
Bounce rate<2%Clean list, verify new signups
Unsubscribe rate<0.5% per sendCheck frequency, relevance, segmentation
Spam complaint rate<0.1%Improve opt-in, add easy unsubscribe, check content
List growth rate>2%/monthImprove lead gen, add more signup touchpoints
Revenue per emailTrack over timeOptimize CTAs, segmentation, offers

Automation-Specific Benchmarks

Sequence TypeExpected Open RateExpected Click RateExpected Conv Rate
Welcome50-80%10-15%5-10%
Cart abandonment40-50%8-12%3-5%
Re-engagement15-25%2-4%1-2%
Onboarding40-60%8-12%Varies
Post-purchase40-50%5-8%2-3% (repeat)

Email Copy Best Practices

Structure

FROM: Real person name + company (not "noreply@")
SUBJECT: [Hook — 6-10 words]
PREVIEW: [Expand/complement subject — 40-90 chars]

BODY:
Opening line — hook them in 1 sentence. No "Hope this finds you well."

2-3 short paragraphs OR bullet list. One idea per paragraph.
Max 200 words for transactional/automated emails.
Max 500 words for newsletters.

Single, clear CTA. Not three different links going to three different places.

Sign-off — personal name, not "The [Company] Team"

What NOT to Do

  • Don't open with "Hey there!" or "Dear Valued Customer"
  • Don't use multiple CTAs competing with each other
  • Don't send from noreply@ (kills replies and trust)
  • Don't use tiny font or light gray text
  • Don't hide unsubscribe link
  • Don't send the same email to your entire list
  • Don't use "Click here" as CTA text — be specific
  • Don't over-design — plain text often outperforms HTML for B2B

ESP Selection Guide

ESPBest ForPrice Range
ConvertKitCreators, newslettersFree to $29+/mo
MailchimpSmall business, starting outFree to $350+/mo
KlaviyoEcommerce (Shopify especially)Free to $150+/mo
Customer.ioSaaS, behavioral automation$100+/mo
ActiveCampaignSMB with CRM needs$29+/mo
PostmarkTransactional email (deliverability)$15+/mo
SendGridDeveloper-first, high volumeFree to $90+/mo
HubSpotFull marketing suite ($$)Free to $800+/mo
LoopsModern SaaS email$49+/mo
ResendDeveloper-first, modernFree to $20+/mo

Decision Framework

  • Ecommerce: Klaviyo (deep Shopify integration, revenue attribution)
  • SaaS: Customer.io or Loops (event-based triggers, product data)
  • Creator/Newsletter: ConvertKit or Beehiiv
  • Enterprise: HubSpot, Marketo, or Iterable
  • Transactional only: Postmark or Resend (best deliverability)
  • Budget-conscious: Mailchimp free tier or SendGrid

Quick-Start Implementation

Step 1: Foundation (Week 1)

  1. Choose ESP and set up account
  2. Configure SPF, DKIM, DMARC
  3. Set up custom sending domain
  4. Import existing contacts (verified/cleaned)
  5. Create unsubscribe and preference center pages

Step 2: Welcome Sequence (Week 2)

  1. Write 7 welcome emails using templates above
  2. Set up automation trigger: new subscriber
  3. Add behavioral branches if your ESP supports it
  4. Test entire flow with a personal email
  5. Enable and monitor for 2 weeks

Step 3: Core Automations (Week 3-4)

  1. Cart abandonment (if ecommerce)
  2. Onboarding sequence (if SaaS)
  3. Re-engagement sequence (30-day inactive trigger)
  4. Post-purchase/post-conversion thank you

Step 4: Optimize (Ongoing)

  1. A/B test subject lines on every send
  2. Review metrics weekly
  3. Clean list monthly (remove bounces, suppress cold)
  4. Refresh copy quarterly
  5. Test send times monthly