EMAIL & SMS MARKETING

US e-commerce brands generate 25-40% of revenue from email and SMS — if yours is under 15%, the flows are the problem, not the audience

Klaviyo powers roughly 55% of US Shopify stores. Most of them have a welcome series and an abandoned cart flow. Most of those flows are underperforming because segmentation is wrong, the SMS list was collected without TCPA compliance, the VIP segment does not exist, and campaign sends are depleting the list faster than automation is compounding it. We audit, rebuild, and manage the full programme.

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Intro / Context Block

US e-commerce email marketing is not an emerging practice. The tools are mature, the playbooks are documented, and Klaviyo is on well over half of Shopify stores. The problem is not awareness of what good looks like. The problem is execution: the gap between what a well-run Klaviyo programme produces and what the average US Shopify store actually has configured is substantial, and it is costing brands a significant percentage of recoverable revenue every month.

The benchmark is real. US e-commerce brands operating best-in-class email and SMS programmes — with complete flow coverage, clean list segmentation, active deliverability management, and a full SMS programme alongside email — consistently generate 25-40% of total revenue from owned channels. Brands without those elements in place are typically in the 5-15% range. The difference is not audience quality or product market fit. It is the compound effect of automation working continuously in the background while campaigns bring in incremental revenue on top.

The SMS dimension adds complexity. Klaviyo SMS in the US is a strong channel — SMS open rates are above 90%, and the combined email-and-SMS abandoned cart sequence consistently outperforms either channel alone. But the US operates under TCPA, the Telephone Consumer Protection Act, which requires express written consent for commercial SMS. Non-compliant SMS collection — checkbox bundled with email sign-up, implied consent, or retroactive opt-in — creates legal exposure of up to $1,500 per message. This is not a theoretical risk. TCPA class action litigation in e-commerce is active, and the per-message penalty structure means exposure scales with list size.

The segmentation failure is the most common reason a well-intentioned Klaviyo account underperforms. When a first-time site visitor who abandoned a cart, a customer who has bought three times in the last 60 days, and a subscriber who has not opened an email in six months all receive the same campaign email, the performance data for all three groups is polluted and the sending reputation degrades because the unengaged segment pulls down engagement metrics for the whole list.

What's broken

The four email and SMS problems holding US Shopify brands back from their owned-channel revenue potential

SMS list collected without TCPA-compliant double opt-in

TCPA requires express written consent for commercial SMS marketing in the US. That consent must be documented, specific to SMS (not bundled with email consent), and not a condition of purchase. A sign-up form that collects both email and phone number with a single checkbox — or that implies SMS consent from a phone number entered during checkout — does not meet the TCPA standard. The per-message penalty for non-compliant SMS is $500 to $1,500, and violations are actively litigated. An SMS list built through non-compliant collection is a legal liability, and its size determines the scale of that liability. The correct approach is a separate SMS opt-in with explicit consent language, a double opt-in confirmation message, and documented consent records.

Abandoned cart flow stops before all recovery is exhausted

The standard Klaviyo abandoned cart flow ends at Email 3, typically delivered 72 hours after abandonment. For many US Shopify stores, this is where the sequence stops — no SMS follow-up, no browse abandonment extension for visitors who looked at the product page again after the emails, no "last chance" email at 7 days for high-value carts. The buyer who abandons a $200 cart and receives three emails over 72 hours is not the same as the buyer who abandons a $20 cart. The sequence depth, the discount logic, and the escalation timing should differ based on cart value. A flat three-email sequence applied to all cart abandonments leaves recovery on the table at the high-value end and over-discounts at the low-value end.

No VIP segment — the highest-value customers treated like everyone else

The top 10-20% of buyers by lifetime value represent a disproportionate share of revenue. They purchase more frequently, have higher average order values, and are more likely to refer new buyers. In most US Shopify stores running Klaviyo, these customers receive the same promotional campaign cadence as first-time visitors, the same win-back flow timing as low-value lapsed buyers, and no differentiated treatment that reflects their relationship with the brand. A VIP segment — built on LTV threshold, purchase frequency, or both — enables early access campaigns before public sales, exclusive product previews, loyalty messaging that acknowledges purchase history, and win-back sequences that do not lead with a discount, because VIP customers often respond to recognition before they respond to price reduction.

Campaign revenue over-indexed versus flow revenue — the list is being depleted faster than automation compounds it

When campaign send frequency increases but flow revenue as a percentage of total email revenue stays flat or declines, the programme is relying on promotional volume to generate revenue rather than on the automation compounding effect that a well-built flow stack produces continuously. Campaigns require a decision and a send to generate revenue. Flows generate revenue passively, every day, triggered by subscriber behaviour. A programme where 80% of email revenue comes from campaigns and 20% from flows is fragile — it depends on the next send to keep the number up, and it gradually depletes the list's engagement as send frequency increases without matching the increase with content value. A rebalanced programme invests in flow depth and reduces campaign frequency for the unengaged segment, which protects deliverability and allows the list to sustain performance over time.

What we engineer

What the Email & SMS Marketing engagement covers for US Shopify brands

Klaviyo audit and TCPA compliance review

Full audit of existing Klaviyo account: flow coverage, segmentation structure, sender reputation, list health, and SMS compliance. TCPA audit of SMS opt-in mechanism. Consent documentation review. Remediation plan for non-compliant SMS collection, including re-consent campaign design for existing list if needed.

Abandoned cart flow rebuild (multi-step, value-tiered)

SMS step at 30 minutes for SMS opt-ins (TCPA-compliant). Email 1 at 1 hour. Email 2 at 24 hours. Email 3 at 72 hours. Email 4 ("last chance") at 7 days for carts above a set value threshold. Conditional discount logic: discount offered only at Email 3 or 4, only for carts above a minimum value, only for subscribers who have not already received a discount in the current window. Browse abandonment extension: triggered for subscribers who view the abandoned product page again after Email 3 without purchasing.

Welcome series (5-email sequence)

US consumer-optimised. Email 1: brand introduction with value proposition statement. Email 2: product range with social proof. Email 3: first-purchase incentive (discount or free shipping offer) — withheld until Email 3 to avoid training subscribers to wait for the offer. Email 4: brand story or editorial content for non-purchasers. Email 5: last chance reminder at 14 days for non-purchasers.

Post-purchase upsell flow

Order confirmation (marketing version, separate from Shopify transactional email). Product usage guide at day 3. Review request at day 14. Cross-sell recommendation at day 30, built on product category logic from Shopify purchase data. Replenishment prompt at day 60 for consumable product categories.

VIP segment build and VIP programme design

VIP segment criteria defined based on client's LTV distribution: typically top 10-15% by spend, minimum 2 purchases, purchased within 12 months. VIP-specific flow: early access emails before public sales, exclusive product previews, loyalty recognition messaging. Separate campaign cadence for VIP segment with higher frequency and higher content quality threshold. VIP win-back flow at 90 days of no purchase — no immediate discount, recognition-led re-engagement.

Win-back flow

90-day trigger for non-VIP lapsed buyers. Three-email sequence. Email 1: re-engagement without discount. Email 2: social proof and new arrivals. Email 3: conditional discount for segments above a minimum historical order value. Sunset flow for subscribers who do not engage in the win-back sequence — suppressed from further campaign sends before they damage sender reputation.

Browse abandonment flow

Two-email sequence for subscribers who view a product page without adding to cart. Product-specific content, related items, and urgency signals (low stock, trending) where applicable.

SMS programme (TCPA-compliant build)

New SMS opt-in form with explicit TCPA consent language, separate from email opt-in. Double opt-in confirmation message. SMS flows: abandoned cart (30-minute step, before email sequence), shipping updates (transactional), post-purchase review request at day 14. SMS campaign cadence: maximum 2-4 sends per month to active SMS subscribers, frequency reduced for subscribers with low SMS engagement.

List segmentation

Active subscribers (opened or clicked in 90 days), active buyers (purchased in 90 days), first-time buyers, repeat buyers, VIP (LTV threshold), high-risk deliverability (no opens in 180 days), sunset candidates (no opens in 270 days). Campaign suppression applied to sunset segment.

Campaign strategy and calendar

Monthly campaign plan with US retail calendar: Black Friday / Cyber Monday (with early-access VIP sends), Back to School, Valentine's Day, Mother's Day, Father's Day, Labor Day, Independence Day sale period. Campaign frequency by segment: VIP receives higher frequency; unengaged receives lower frequency or is suppressed.

A/B testing programme

Systematic testing of subject lines, preview text, send times, and discount threshold logic across welcome series, abandoned cart, and campaign sends. Monthly results review with winning variants set as new defaults.

Deliverability management

Monthly sender reputation review: bounce rate, complaint rate, open rate by domain (Gmail, Yahoo, Outlook). Unengaged subscriber suppression on a 90-180 day rolling window. Domain warm-up protocol for any new sending domains. IP warm-up if moving to a dedicated IP.

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What changes

What a rebuilt Klaviyo programme produces for US Shopify brands

Before
After
Before TCPA requires express written consent for commercial SMS marketing in the US. That consent must be documented, specific to SMS (not bundled with email consent), and not a condition of purchase. A sign-up form that collects both email and phone number with a single checkbox — or that implies SMS consent from a phone number entered during checkout — does not meet the TCPA standard. The per-message penalty for non-compliant SMS is $500 to $1,500, and violations are actively litigated. An SMS list built through non-compliant collection is a legal liability, and its size determines the scale of that liability. The correct approach is a separate SMS opt-in with explicit consent language, a double opt-in confirmation message, and documented consent records.
After Email and SMS as percentage of total revenue: Brands with full flow coverage, active segmentation, and monthly management typically reach 25-40% of revenue from email and SMS within 9-12 months. Brands with partial flow setup and no segmentation are typically in the 8-15% range at the start of an engagement.
Before The standard Klaviyo abandoned cart flow ends at Email 3, typically delivered 72 hours after abandonment. For many US Shopify stores, this is where the sequence stops — no SMS follow-up, no browse abandonment extension for visitors who looked at the product page again after the emails, no "last chance" email at 7 days for high-value carts. The buyer who abandons a $200 cart and receives three emails over 72 hours is not the same as the buyer who abandons a $20 cart. The sequence depth, the discount logic, and the escalation timing should differ based on cart value. A flat three-email sequence applied to all cart abandonments leaves recovery on the table at the high-value end and over-discounts at the low-value end.
After Abandoned cart recovery: Combined SMS and email abandoned cart sequences typically recover 10-20% of abandoned carts. SMS-only sequences recover 5-10%. Email-only three-step sequences recover 5-12%. The combination and the depth of the sequence (including the 7-day last-chance for high-value carts) contribute to the higher end of the range.
Before The top 10-20% of buyers by lifetime value represent a disproportionate share of revenue. They purchase more frequently, have higher average order values, and are more likely to refer new buyers. In most US Shopify stores running Klaviyo, these customers receive the same promotional campaign cadence as first-time visitors, the same win-back flow timing as low-value lapsed buyers, and no differentiated treatment that reflects their relationship with the brand. A VIP segment — built on LTV threshold, purchase frequency, or both — enables early access campaigns before public sales, exclusive product previews, loyalty messaging that acknowledges purchase history, and win-back sequences that do not lead with a discount, because VIP customers often respond to recognition before they respond to price reduction.
After VIP segment revenue contribution: VIP segments (top 10-15% of buyers by LTV) typically account for 30-40% of total email revenue in well-managed programmes. Before a VIP segment is built, this revenue is indistinguishable from campaign performance and cannot be managed as a distinct channel.
Before When campaign send frequency increases but flow revenue as a percentage of total email revenue stays flat or declines, the programme is relying on promotional volume to generate revenue rather than on the automation compounding effect that a well-built flow stack produces continuously. Campaigns require a decision and a send to generate revenue. Flows generate revenue passively, every day, triggered by subscriber behaviour. A programme where 80% of email revenue comes from campaigns and 20% from flows is fragile — it depends on the next send to keep the number up, and it gradually depletes the list's engagement as send frequency increases without matching the increase with content value. A rebalanced programme invests in flow depth and reduces campaign frequency for the unengaged segment, which protects deliverability and allows the list to sustain performance over time.
After Welcome series purchase conversion: 5-12% of US subscribers who complete the welcome series make a first purchase within the sequence window. The purchase rate for welcome series is typically 3-5x higher than for subscribers who receive a cold campaign email as their first post-signup communication.
How it works

How we build and launch the US email and SMS programme

  1. 01

    Audit, TCPA review, and account structure

    Week 1

    Full Klaviyo audit. SMS consent documentation reviewed. TCPA remediation plan drafted if needed. List health assessed by domain and engagement recency. Sender reputation scored. Segmentation gaps identified.

  2. 02

    Core flow architecture

    Week 2

    Abandoned cart flow rebuilt with value-tiered logic and TCPA-compliant SMS step. Welcome series drafted and designed. Post-purchase flow built. All flows in draft pending client review.

  3. 03

    VIP programme, win-back, and segmentation

    Week 3

    VIP segment criteria defined and built in Klaviyo. VIP flow designed and drafted. Win-back and browse abandonment flows built. Core segments created. SMS opt-in form rebuilt with TCPA-compliant copy.

  4. 04

    Launch, campaign calendar, and SMS activation

    Week 4

    All flows activated. SMS opt-in form live. First campaign send executed. 60-day campaign calendar delivered with US retail occasions and segment-level frequency plan. Klaviyo reporting dashboard configured: flow revenue, campaign revenue, email vs SMS revenue split, revenue per recipient by segment, open rate and click rate by segment.

  5. 05

    Monthly management

    Ongoing

    Campaign sends by segment. A/B test results reviewed. Deliverability data reviewed with suppression action taken monthly. VIP programme managed with early-access campaign coordination. TCPA compliance maintained for SMS sends. Quarterly segment refresh and LTV threshold review.

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Common questions

FAQ

What does TCPA compliance require for e-commerce SMS marketing in the US?

The Telephone Consumer Protection Act requires express written consent before sending commercial SMS marketing messages to US mobile numbers. This consent must be specific to SMS (not bundled with email opt-in), must not be a condition of purchase, must include a clear description of what the subscriber is opting into, and must be documented in a form the business can produce if challenged. The standard compliant mechanism is an unchecked checkbox with explicit SMS consent language, followed by a double opt-in confirmation text message to the number provided. Penalties for non-compliant commercial SMS are $500 per message for standard violations and $1,500 per message for willful violations, and TCPA class actions in e-commerce are actively litigated.

What percentage of revenue should come from email and SMS flows versus campaigns?

For a well-managed US e-commerce email programme, the target ratio is approximately 40-60% of email and SMS revenue from automated flows and 40-60% from campaigns. Flows generate revenue passively from subscriber behaviour (cart abandonment, post-purchase, browsing); campaigns generate revenue from scheduled sends. A programme where flows account for less than 25% of email revenue is over-reliant on campaign volume and is not building the compounding automation effect that distinguishes a mature programme from a broadcast one. The flow percentage tends to increase over time as more flows are built, tested, and optimised, while the campaign percentage stabilises.

How do I build a VIP segment in Klaviyo for high-LTV customers?

A VIP segment in Klaviyo is built using a combination of conditions from Shopify purchase data: typically a minimum number of orders (2 or more), a minimum lifetime spend (determined by the LTV distribution of the specific store — often the top 10-15% of buyers by spend), and a recency filter to exclude very old high-value customers who are no longer active. Klaviyo's native segmentation pulls Shopify order data in real time, so the segment updates automatically as customers meet or fall below the criteria. Once the segment is built, it can be used to suppress VIPs from standard win-back flows (where a discount offer would be margin-dilutive for customers who would repurchase anyway), to target VIPs with early-access campaigns, and to build a separate post-purchase flow with higher-value content.

What is the right cadence for post-purchase flows — how many emails and when?

For a typical US e-commerce store, a five-to-six-step post-purchase flow works as follows: Email 1 (marketing version of the order confirmation) at 1-2 hours after purchase, separate from the Shopify transactional confirmation. Email 2 (product usage guide or care instructions) at day 3. Email 3 (review request) at day 10-14, timed to arrive after delivery is confirmed. Email 4 (cross-sell recommendation based on the purchased product category) at day 30. Email 5 (replenishment reminder for consumable products, or second cross-sell for non-consumables) at day 60. A sixth email at day 90 for non-repurchasers can transition into the win-back sequence. The specific timing should be adjusted for shipping lead time — a product with a 2-week delivery time should have its review request email delayed accordingly.

How do I avoid email deliverability issues when sending at high volume in the US?

Deliverability at high volume in the US depends on four variables: sender reputation (your domain's and IP's history with inbox providers), list hygiene (proportion of valid, engaged addresses), content quality (spam filter scoring and engagement signals), and sending consistency (volume spikes are treated as suspicious by Gmail and Yahoo). The most common cause of deliverability problems for US Shopify brands is sending to unengaged subscribers — addresses that have not opened or clicked in 90-180 days. These addresses drag down the engagement rate that inbox providers use to determine whether your mail goes to the inbox or the promotions tab. The fix is segmentation and suppression: remove unengaged subscribers from campaign sends, put them through a sunset flow, and suppress those who do not re-engage. For stores moving to high-volume sending from a new domain or IP, a warm-up protocol — starting at low volume and increasing gradually over 4-6 weeks — is required to establish sender reputation before full volume sends begin.

Our team

The people behind the work

Not a black box. Real specialists you can call, with their names on the work.

Niraj Raut

Niraj Raut

Founder — Ecommerce SEO
Keshab Joshi

Keshab Joshi

PPC Expert
Hawrry Bhattarai

Hawrry Bhattarai

Google Ads Expert
Arogya Rijal

Arogya Rijal

SaaS SEO Expert
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Why Ignited Nepal

Ignited Nepal is a Growth Engineering Company. We work with e-commerce businesses across the US, Australia, UAE, and Nepal. Our US e-commerce email practice is built on Klaviyo, and we approach every US engagement with the compliance requirements — TCPA for SMS — as a first-order constraint, not an afterthought.

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