Klaviyo Welcome Series: What to Send and When (2026)

Reviewed by the shopexperts editorial team. Last updated July 6, 2026.

The welcome series is where subscribers become customers. It's the second most important flow in Klaviyo (after abandoned cart) and the one that determines whether all your list-building efforts — popups, footer signups, checkout captures — actually produce revenue.

Email 1 in the welcome series has the highest engagement of any email you'll ever send. 50-70% open rates are typical. This is the moment where the subscriber is most attentive, most curious, most willing to buy. Waste it with a generic template and you've wasted the single best conversion opportunity you'll have with that subscriber.

Well-built welcome series converts 5-15% of new subscribers to first-time buyers within 10 days of signup. Poorly built converts 2-4%. The gap traces to specific fixable things: no welcome offer when one was promised, too many emails burning out subscribers, generic template design, no product education, no sunset for unengaged subscribers.

This guide covers the exact welcome series structure that works — email-by-email content, discount strategy, subject lines, segmentation by signup source, and the mistakes that kill conversion. For the broader flows framework, see the 5 Klaviyo flows every Shopify store needs. For abandoned cart specifically, see the abandoned cart flow guide.

The welcome series triggers when a new subscriber joins your email list. The trigger source matters because it determines the subscriber's context and intent.

Common triggers

• Popup signup: Highest-intent trigger. Customer actively engaged with your site and gave email in exchange for value (usually a discount).
• Footer/embedded form: Lower-intent. Customer chose to subscribe without an incentive prompt.
• Checkout signup: Purchase already made or in progress. Different context entirely.
• Account creation: Customer signaled deeper engagement by creating an account.
• SMS signup with email: Multi-channel subscriber. Both channels available for welcome sequence.

Single flow or multiple flows?

Most Shopify stores start with one welcome series that fires for all new subscribers. Once the flow is running well, splitting into multiple flows by trigger source produces meaningful lift. Popup subscribers who got a 10% discount need a different email 1 than footer subscribers who didn't. Checkout-triggered welcomes need to acknowledge that the person already knows your product.

The wait time before email 1

Almost always immediate. Zero-minute delay or a few-minute delay to let the subscription record fully sync. The subscriber's attention is peak in the first 5-15 minutes after signup; waiting even an hour degrades open rates by 10-20%.

The exception: if you're promising a discount code in the popup, the code delivery email must go out immediately regardless. Customers wait for the code; delayed delivery kills trust.

Filters that must be configured

• Placed Order since signup: Removes customers who purchased before the welcome sequence completed. Some subscribers convert on email 1 or 2; they shouldn't receive the discount-heavy later emails.
• Consent to marketing: Explicit marketing consent required. Klaviyo handles this natively when integrated properly.
• Not on suppression list: Bounced, complained, or unsubscribed profiles should not receive the flow.

End-of-flow sunset

The welcome series should end with a sunset step for subscribers who don't engage. If a subscriber didn't open any of the 5 emails, mark them as unengaged and reduce or stop future sends. This is critical for keeping Klaviyo costs sane (unengaged profiles count against billing) and for protecting deliverability (low engagement drags down sender reputation).

The 5-email sequence that works for most Shopify DTC stores. Category-specific adjustments discussed later; this is the foundation.

Email 1: The Welcome (immediate)

• Timing: Immediate. Zero delay after signup.
• Purpose: Deliver on the signup promise (usually a discount code), introduce the brand briefly, get the customer back to your site.
• Content: Discount code prominently displayed (if promised). One-paragraph brand intro. Best-sellers or founder's picks with clear CTAs. Signature or personal touch that feels human.
• Subject line patterns: "Welcome to [brand] — here's 10% off" / "Your discount code is here" / "Hey there, welcome!" / "10% off inside"
• Expected performance: 50-70% open rate. 8-15% click rate. 3-6% conversion from this email alone.
• Never include: Long brand history essays, multiple discount codes, aggressive multi-CTA layouts. Keep it focused.

Email 2: The Product Education (day 2-3)

• Timing: 2-3 days after signup.
• Purpose: Explain what you sell and why it's different. Convert curiosity into consideration.
• Content: Best-sellers or hero products with specific benefits. Founder's story or brand mission (short, not essay). What makes your product different. Clear CTAs to product pages.
• Subject line patterns: "Meet our best-sellers" / "The story behind [brand]" / "Here's what everyone's loving" / "Why [brand] is different"
• Expected performance: 35-50% open rate. 5-10% click rate. 1-3% conversion.
• Category-specific angles: Fashion → style guide or lookbook. Beauty → concern-based recommendations (skin type, hair type). Supplements → ingredient education and testing. Home goods → styling ideas.

Email 3: The Social Proof (day 4-5)

• Timing: 4-5 days after signup.
• Purpose: Trust-building through customer voices. Move the subscriber from consideration toward purchase.
• Content: Reviews with specific customer quotes (not just star ratings). User-generated photos if available. Press mentions if you have them. Aggregate metrics ("10,000+ happy customers"). CTA to shop specific reviewed products.
• Subject line patterns: "What our customers say" / "Loved by 10,000+" / "Real reviews from real customers" / "Here's why customers keep coming back"
• Expected performance: 30-45% open rate. 4-8% click rate. 1-3% conversion.
• Common mistake: Generic testimonials without customer names, faces, or specific product context. Testimonials that could be about any product feel fake.

Email 4: The Objection Handler (day 7)

• Timing: 7 days after signup.
• Purpose: Remove the friction that's keeping the subscriber from purchasing.
• Content: Category-specific objection handling. Shipping policy summary. Returns and guarantees. Sizing guide link (fashion). Ingredient sourcing (supplements/beauty). Warranty terms (home goods). FAQ section addressing top pre-purchase concerns.
• Subject line patterns: "Free shipping on your first order" / "Our promise to you" / "Questions before you buy?" / "Our returns policy is simple"
• Expected performance: 25-40% open rate. 3-7% click rate. 1-2% conversion.
• High-AOV brands: This is where payment plan options (Shop Pay Installments, Klarna, Afterpay) belong. Objection may be budget-related; addressing it removes real friction.

Email 5: The Discount Reminder (day 10)

• Timing: 10 days after signup. Coincides with common discount expiry.
• Purpose: Final urgency push. Discount code expiration prompts the "buy now" decision.
• Content: Discount code reminder with clear expiry date. Best-sellers to focus attention on specific products. Countdown timer if brand style allows. Alternative CTA (browse without purchase) for subscribers not ready to buy.
• Subject line patterns: "Your discount expires soon" / "Last chance for 10% off" / "Your welcome offer ends tomorrow" / "Time's almost up"
• Expected performance: 25-35% open rate. 4-8% click rate. 2-4% conversion.
• When to skip email 5: If you didn't offer a discount at signup, this email loses its main hook. Some brands replace with a "here's what's new" content-focused email instead. Others skip entirely and let the flow end at email 4.

Discount decisions on the welcome series affect margin, brand positioning, and long-term customer behavior. The decision matters more than most operators realize.

Discount amounts that work

• 10% off: Standard for most Shopify DTC stores. Enough incentive to convert first-time buyers, small enough to protect margin.
• 15% off: Common in competitive categories (fashion, beauty). Higher conversion but tighter margin.
• 20% off: Aggressive. Justified only in categories with strong margins or when competing against established players who discount similarly.
• $5 or $10 flat off: Works better than percentage for lower-AOV stores. "10% off a $30 order" is $3; "$5 off" feels bigger.
• Free shipping: Protects margin, adds perceived value, converts almost as well as small percentage discount.

When to skip discount entirely

Some premium brands skip discount at signup to protect positioning. Legitimate but expensive: signup rates drop 30-50% without an incentive prompt. Justified only when: brand positioning is genuinely premium (competitive discounting would signal desperation), you're confident in content-driven welcome series (product education strong enough to convert without price incentive), or you're at scale where the signup volume reduction is acceptable.

Discount expiration timing

The discount should expire 10-14 days after signup. Long enough that the customer has time to consider; short enough to create urgency. Klaviyo can generate unique discount codes per subscriber with individual expiration dates, which is cleaner than a shared code with a single deadline. Individual codes also prevent code sharing.

Multi-tier discount (advanced)

Some stores offer escalating discount within the welcome series: 10% in email 1, 15% in email 5. Works for stores with room in margins but trains customers to wait. Generally not recommended unless testing shows meaningful lift over flat discount.

The discount vs no-discount signup test

If you're unsure whether to offer a signup discount, test popup variations for 30-60 days. Discount popup vs no-discount popup, measure: signup rate, subscriber-to-first-purchase conversion rate, first-order value, and lifetime value at 90-day and 12-month marks. Discount signups often convert faster but at lower first-order value; no-discount signups convert slower at higher lifetime value. Category-dependent; test for your business.

Subject line patterns that consistently perform well in welcome series. Email 1 subject line is the highest-impact single line in your entire email program.

Email 1 subject line principles

• Include the discount if one was promised: "Your 10% off is here" outperforms "Welcome to [brand]" because it delivers the promised value up front.
• Personalization works if the name is available: "Hey [name], welcome!" opens 3-5% higher than generic. Klaviyo pulls the name from checkout or account creation if available.
• Under 40 characters: Mobile inbox cuts around 30-40 characters. Discount codes and brand name eat into this quickly.
• Preview text reinforces or extends: Subject "Welcome to [brand]" + preview "Here's 10% off your first order" delivers more than either line alone.

Subject line patterns for later emails

• Email 2 (product education): "Meet our best-sellers" / "Everyone's buying this" / "Where to start"
• Email 3 (social proof): "What our customers say" / "Loved by 10,000+" / "See why"
• Email 4 (objection handler): "Free shipping on your first order" / "Our returns policy" / "Questions before you buy?"
• Email 5 (last chance): "Your discount expires soon" / "Last chance for 10% off" / "Time's almost up"

Copy principles for the email body

• Short in email 1: 100-200 words total. Discount code, brand intro, best-sellers, CTA. Not an essay.
• Medium in emails 2-4: 200-350 words with specific content and images.
• Brand voice throughout: If your brand is friendly, the welcome series should feel friendly. If your brand is premium and reserved, it should read that way.
• Personal signature or sign-off: "Written by" the founder or a customer service person, not from "Marketing Team." Humans convert better than departments.
• Mobile-first design: 60-80% of opens are mobile. Preview every email on mobile before launch.

Copy patterns that don't work

• Long brand origin stories in email 1: Subscribers haven't earned the right to your full story yet. Distill to one sentence.
• Generic "welcome to the family" language: Overused and feels performative.
• Multiple discount codes in one email: Confuses the customer and dilutes the offer.
• Three or more competing CTAs: One clear action per email. Shopping around defeats the sequence.

Basic welcome series works for all signup sources. Layered segmentation lifts performance meaningfully. Same principle as abandoned cart: the operator sending the same emails to everyone leaves revenue on the table.

Level 1: Signup source

Popup signups behave differently from footer signups. Popup subscribers gave email in exchange for a discount; they're primed to buy. Footer subscribers chose to subscribe without an incentive; they're curious but colder. Same welcome series to both is a compromise.

Popup subscribers benefit from: aggressive first-purchase CTAs, discount emphasis, shorter sequence. Footer subscribers benefit from: more brand education, more social proof, less discount pressure, longer sequence.

Level 2: Category interest at signup

If your popup captures category interest (women's vs men's, product category, use case), use that to personalize the welcome series. Customers who indicated interest in supplements shouldn't see best-sellers from your skincare line in email 2. Klaviyo's dynamic content blocks handle this cleanly once the data is captured.

Level 3: Existing customer status

Some existing customers sign up for email through a new popup or footer form. They shouldn't receive the same welcome series as brand-new subscribers. Filter existing customers out of the welcome flow or route them to a "welcome back" variation that acknowledges their history.

Level 4: Traffic source

Subscribers who signed up from Meta ads have different context than Google search subscribers or referral subscribers. Meta subscribers often need more brand education (the ad was product-specific, not brand-specific). Search subscribers had specific intent (they searched for something). Referral subscribers came with social validation.

Segmentation implementation in Klaviyo

Klaviyo supports these cuts natively via flow filters, conditional splits, and dynamic content blocks. The mechanics aren't hard; the strategy is. Most stores stop at basic single-flow welcome. Layered segmentation (signup source + category interest at minimum) starts producing the 8-12% conversion rates vs the 3-5% common with basic setup.

For deeper segmentation strategy across all flows, see Klaviyo segmentation: how to actually use it to make more money.

SMS in the welcome series is optional but valuable if you're capturing SMS opt-in during signup. Less critical than SMS on abandoned cart but still worth building.

When SMS welcome makes sense

• Your signup form captures both email and SMS consent (increasingly common)
• Your brand has an active SMS program on other flows and campaigns
• Your category benefits from higher-urgency communication (fashion drops, limited inventory, flash sales)
• Your customer base skews younger (SMS engagement higher in 18-35 demographics)

How to structure email + SMS welcome

• Immediate SMS: Discount code delivery via SMS if promised at signup. Short, direct link back to store.
• Immediate email: Email 1 with fuller welcome content, discount code (reinforce), brand intro.
• Day 2-10: Email sequence continues as normal. No further SMS — too many messages feels aggressive.
• Day 10 (optional): Final SMS reminder that discount is expiring, if the customer hasn't purchased yet.

SMS welcome copy patterns

• Under 160 characters (single SMS segment)
• Brand name at start
• Discount code and expiry
• Short link to store
• STOP language for compliance
• Example: "[Brand]: Welcome! Here's your 10% off code: WELCOME10. Shop now: [link]. Expires 10/15. Reply STOP to unsub."

SMS-only welcome (rare)

Some stores capture SMS-only signups (no email). Rare in Shopify DTC because email is still the higher-value channel long-term. If you're running SMS-only welcome, the sequence should still be 3-5 messages spaced over 5-10 days — same structure as email, adapted for SMS format constraints.

For SMS pricing detail and cost math, see Klaviyo SMS pricing explained.

Patterns I see across underperforming welcome series. Each is fixable; most take an operator with Klaviyo depth to identify and fix.

No welcome offer when one was promised

The popup promised 10% off. Email 1 doesn't deliver it. Or the code arrives in email 3 instead. Kills trust immediately; subscribers unsubscribe or ignore the flow entirely. If you promised an incentive, deliver it in email 1 above the fold.

Too many emails

Six or seven emails in the welcome series burns out subscribers. Diminishing returns kick in after email 5 for most brands; email 6-7 typically produce more unsubscribes than conversions. Five is the ceiling for most Shopify DTC stores.

Generic template design

Klaviyo's default templates are functional but feel like default templates. Subscribers can tell. Templates that could be from any brand convert 30-40% below brand-specific designs. Every welcome series that's working well has clearly-branded emails that feel distinctly like the store, not like a marketing agency's output.

Long brand story reintroductions

Email 2 should be product education, not the founder's three-paragraph life story. Subscribers subscribed to see products; give them product-focused content first. Brand story is fine in small doses; not fine as the primary content of any single email.

No product education

Welcome emails that only push discounts and brand identity without explaining what the product is or why it matters underperform. Subscribers need to understand what you sell and why they should care. Product education isn't optional; it's the substance behind the discount.

Discount code too generous

20-30% signup discounts destroy margin without proportionally increasing conversion. Most testing shows 10-15% converts at 80-90% of the rate that 20-25% converts, at significantly better first-order margin. Deep discounts also attract discount-focused customers who don't return without further discounts.

No sunset step

Subscribers who don't engage with any of the 5 emails need to be moved to a passive segment. Continuing to send to unengaged profiles drags down deliverability metrics and inflates Klaviyo billing. The sunset step is where welcome series meets list hygiene.

Not matching the brand voice

Welcome series that reads like it was written by a different brand than your store site kills trust. Consistency matters. If your product pages are conversational and warm, the welcome series should be too. If your product pages are premium and reserved, welcome series should match.

Ignoring mobile design

60-80% of email opens happen on mobile. Welcome emails built and tested only on desktop consistently underperform. Preview every email on mobile before launch.

What good performance looks like, what average looks like, and how to tell where yours falls.

Conversion rate (the metric that matters most)

• Well-built welcome series: 8-15% of new subscribers convert to first-time buyers within 10 days
• Average: 3-6%
• Underperforming: Under 3%
• Best-in-class (with SMS, deep segmentation, category-specific content): 15-25%

Open rates by email

• Email 1: 50-70% open (highest of any email in your program)
• Email 2: 35-50%
• Email 3: 30-45%
• Email 4: 25-40%
• Email 5: 25-35%

Click rates by email

• Email 1: 8-15% click rate
• Email 2: 5-10%
• Email 3: 4-8%
• Email 4: 3-7%
• Email 5: 4-8%

Revenue per subscriber

For a store with $100 AOV: well-built welcome series produces $0.50-$3.00 per new subscriber in first 30 days. Poorly built produces $0.20-$0.60. For a store adding 500 subscribers/month, the difference is $150-$1,200/month in first-purchase revenue — from welcome series alone. Compound effect over 12 months is meaningful.

Unsubscribe rate

Unsubscribe rate in a well-built welcome series: 1-3% across the entire flow. Over 5% suggests too many emails, wrong content, or wrong audience targeting. Under 1% typically means the flow is too short or the discount is doing all the work (subscribers stay for the discount, don't engage with content).

How to diagnose underperformance

If conversion rate is below 3%, check in this order: 1) email 1 open rate (if under 50%, subject line or timing problem), 2) welcome offer delivery (if promised but not delivered, kills trust), 3) mobile design (if broken on mobile, most subscribers see broken emails).

Continuing the diagnostic order: 4) sequence length (if 6+ emails, too many), 5) segmentation (if none by signup source, layered segmentation is the highest-lift addition), 6) sunset step (if missing, unengaged subscribers drag down averages and inflate Klaviyo billing).

Once the foundation is running at benchmark, these are the levers that push it toward the 15-25% best-in-class range.

Signup-source-specific welcome variations

Not just Level 1 segmentation. Fully different flows for popup vs footer vs checkout vs account creation. Different content, different sequence length, different discount strategy per source. Meaningful complexity to build; meaningful lift when done well.

Progressive profiling

Each email captures more customer data. Email 2 links to a "what are you shopping for" page. Email 3 includes a preferences quiz. Email 4 asks about frequency. By email 5, the profile has enough data to personalize future flows and campaigns meaningfully.

Dynamic product recommendations

Email 2-4 include dynamic product blocks pulled from what the subscriber has browsed since signup. Klaviyo's recommendation engine handles this if the site tracking is configured properly. Personalized product recommendations convert 20-40% higher than generic best-sellers in welcome emails.

Cross-flow coordination

If a new subscriber views a product page during their welcome sequence, coordinate with the browse abandonment flow. Don't send both a welcome email and a browse abandonment email on the same day. Klaviyo's flow filters and cross-flow logic handle this once configured.

Discount code personalization

Instead of shared code WELCOME10, generate unique per-subscriber codes with individual expiration. Cleaner data attribution, no code sharing, better urgency (their code is expiring, not a general campaign).

A/B testing subject lines quarterly

Welcome series subject lines age. Subject lines that opened at 65% two years ago may open at 45% today as inbox behavior changes. Quarterly A/B testing on email 1 subject line specifically is one of the highest-leverage optimization activities in the entire program.

Category-specific full sequence variations

For stores with distinct customer categories (women's vs men's, professional vs consumer, gift-giver vs recipient), building fully category-specific welcome sequences produces meaningful lift. Same brand, different customer paths.

Honest guidance on whether to build the welcome series yourself or hire someone.

Build it yourself if

• Store revenue is under $500K/year
• You have 6-12 hours to invest in Klaviyo's flow builder
• You're a technical founder comfortable with segmentation logic
• Subscriber volume is small (under 200 new subscribers/month) where marginal improvements don't justify operator cost

Hire someone if

• New subscriber volume is meaningful (500+ new subscribers/month) where the difference between 4% and 10% conversion is real dollars
• Store revenue is $500K+ and email should be pulling weight
• You've built the flow and conversion is below 4%
• Segmentation is single-layer or nonexistent
• Your popup is capturing 500+ signups/month but revenue from welcome series is under $5,000/month

What a good welcome series build costs

• Standalone welcome series build (5-email sequence, custom design, basic segmentation): $1,200-$3,500 project
• Full flow overhaul including welcome series: $5,000-$25,000 project (see the 5 Klaviyo flows every Shopify store needs)
• Ongoing optimization retainer: $1,500-$8,000/month covers welcome series plus all other flows

Welcome series has slower payback than abandoned cart (subscriber-to-purchase cycle takes weeks vs cart-recovery days) but compounds meaningfully. Well-built welcome series on a $2M store typically produces $30,000-$80,000/year more in first-purchase revenue than a badly-built one. See Klaviyo experts to compare vetted operators.

Welcome series is where subscribers become customers. Well-built converts 8-15% of new subscribers within 10 days; poorly-built converts 3-6%. The gap traces to specific fixable things: welcome offer delivery, sequence length, mobile design, segmentation by signup source, sunset step for unengaged.

For the broader flows context, see the 5 Klaviyo flows every Shopify store needs. For abandoned cart specifically, see the abandoned cart flow guide. For segmentation depth, see Klaviyo segmentation. To hire someone to build this flow at benchmark performance, compare vetted Klaviyo experts and request a free quote:

Browse Klaviyo experts

Related guides on Klaviyo flows and Shopify email marketing:

• Klaviyo Experts — vetted operators for flow builds
• The 5 Klaviyo Flows Every Shopify Store Needs First — the sub-cluster overview
• How to Build a Klaviyo Abandoned Cart Flow That Actually Converts — the highest-revenue single flow
• Klaviyo Segmentation — segmentation powers flow performance
• Why Your Klaviyo Emails Land in Spam — deliverability protects flow performance
• Klaviyo for Shopify — strategic overview
• What Does Klaviyo Actually Cost? — platform pricing
• Klaviyo SMS Pricing Explained — SMS credits detail
• Klaviyo vs Mailchimp for Shopify — platform comparison
• Shopify Email & SMS Marketing Experts — broader email marketing category