Case study · 02 / 2026

From deliverability risk to €169K in 58 days.
Étoile Milano, rebuilt.

A luxury jewelry brand whose email channel was quietly leaking revenue and landing in spam. We rebuilt the sending infrastructure, subscriber engine and lifecycle stack — and email became the most reliable channel on the P&L.

Client
Étoile Milano
Sector
Luxury jewelry · DTC
Window
58 days · 17 Jan → 16 Feb 2026
Scope
Klaviyo rebuild, deliverability, lifecycle
Snapshot · 17 Jan → 16 Feb 2026

The first 30 days of the rebuild.

A month after the new sending domain went live, flows were already carrying the channel. Campaigns stayed supporting — which is exactly the shape of a healthy email P&L.

30-day attributed email revenue
€122,211
Total email-attributed revenue generated in the first 30 days after the rebuild went live.
from flows · 82.33%
€100,611
Lifecycle automations carried the bulk of revenue — the signature of a healthy, compounding email program.
from campaigns · 17.67%
€21,600
Campaigns supported flows instead of carrying them — inverse of a brand reliant on weekly pushes.
klaviyo.com / etoile-milano
Klaviyo business performance summary — 17 Jan to 16 Feb 2026: €418,766 total revenue, €122,211 attributed, +135% vs previous period
Klaviyo · Business performance summary · 17 Jan → 16 Feb 2026 +135% attributed revenue vs. previous period
01 · Starting point

What was blocking growth.

Étoile Milano came in with brand equity and a loyal customer base, but email was quietly losing money. The list was aging, creative wasn't compounding, and reputation was slipping. Before building, we had to stop the bleed.

Core diagnosis
Wrong domain + unengaged list + no revenue-first foundation.
  1. 01
    Wrong sending domain

    Emails were being sent from a domain not aligned with the brand, degrading inbox placement and reputation.

  2. 02
    Unmaintained list

    No structured hygiene or re-engagement plan — old subscribers were dragging deliverability down with every send.

  3. 03
    Missing revenue foundation

    Flows were either absent or built without a revenue-first structure. Nothing was compounding.

  4. 04
    Accidental acquisition

    Subscriber growth was mostly driven by past customers — no intentional top-of-funnel engine.

  5. 05
    Inconsistent creative

    Emails were close to plain-text, without a scalable design system or clear voice.

02 · Revenue OS rebuild

Five systems, rebuilt in parallel.

Not isolated tactics. A sequenced rebuild, where each layer protects the next — so results compound instead of cancelling each other out.
01

Sending domain & deliverability recovery

Restore inbox placement and rebuild sender reputation around engagement-first sending.

  • New dedicated sending domain provisioned from scratch
  • DNS + authentication rebuilt (SPF, DKIM, DMARC)
  • Re-engagement campaigns to safely recover reputation
  • Structured list hygiene to remove risky profiles
02

Subscriber growth engine

Grow quality, not volume. The list has to scale without dragging reputation down.

  • Mobile & desktop pop-ups redesigned and A/B tested
  • Acquisition sources tagged for attribution
  • Continuous cleanup of unengaged profiles
  • From 6.5K to 33K subscribers in ~14 weeks
03

Identity resolution & tracking

Attribution has to be reliable, or every decision downstream is guessing.

  • Littledata integration for Shopify event quality
  • Identity stitching across anonymous & known visitors
  • Revenue reconciliation between Klaviyo and Shopify
04

Lifecycle automation stack

Automations are the compounding engine. Every intent moment needs to be monetized.

  • 15 total automations deployed
  • 11 pre-purchase (welcome, browse, cart, checkout, VIP gate)
  • 7 post-purchase (shipping, review, replenishment, win-back)
  • Sequenced, merchandised and localized
05

Segmentation & messaging control

Segmentation makes every send intentional — and actively protects deliverability.

  • Lists & segments mapped to lifecycle and engagement
  • Messaging tuned to purchase behavior and intent
  • Exclusion logic that prevents over-sending
  • Creative system consistent across campaigns and flows
klaviyo.com / etoile-milano
Klaviyo top performing flows — Welcome, Post Purchase, Abandoned Checkout, Browse Abandonment, Abandoned Cart, First Purchase Anniversary
Klaviyo · Top performing flows · 17 Jan → 16 Feb 2026 Welcome flow alone: €54,820 · +70% vs previous period
03 · Results

The metrics that moved.

Revenue, deliverability and list growth — the three axes that define whether an email channel is compounding or slowly dying.

Revenue · +135% email revenue growth
€169K

Total email-attributed revenue between 1 January and 16 February 2026 — the first full reporting window after the rebuild went live.

30-day breakdown · €122,211
FLOWS · 82.33%
CAMP · 17.67%
Flows revenue €100,611
Campaigns revenue €21,600
Healthy shape: flows carry the revenue, campaigns amplify. A brand that depends on weekly campaigns to hit its numbers is one send away from a bad month.
klaviyo.com / etoile-milano
Klaviyo business review dashboard — €589K total revenue, €169K attributed revenue, +52.6% attributed growth
Klaviyo · Business review dashboard · 1 Jan → 16 Feb 2026 Attributed revenue €169K · +52.6% vs previous period
Deliverability & engagement

From flagged sender to trusted.

Klaviyo deliverability score
49 86 · Good
Open rate
14.1% 45.0%
Click rate
1.69% 4.74%
Bounce rate
2.29% 0.55%
Spam complaint rate
0.02% 0.006%
Klaviyo deliverability score 86 · Good — Historical score chart from Jan 2025 to Jan 2026
Klaviyo · Deliverability score — historical
Subscriber growth

Quality list, 5× the size.

Nov 2025 · 6.5K Feb 2026 · 33K
Email
6.5K → 33K
SMS
0 → 4.9K
klaviyo.com / etoile-milano
Klaviyo subscriber growth — email subscribers grew from 6.5K to 33K between Nov 30, 2025 and Feb 16, 2026
Klaviyo · Subscriber growth · 30 Nov 2025 → 16 Feb 2026 +20.5% email · +99%+ SMS opt-ins via new pop-ups
Before · Jan–Dec 2025
Klaviyo deliverability before: 13.3% open rate, 1.48% click rate, 2.31% bounce rate, 0.02% spam complaint rate
After · Dec 2025–Feb 2026
Klaviyo deliverability after: 45.0% open rate, 4.74% click rate, 0.55% bounce rate, 0.006% spam complaint rate

Same Klaviyo account, two reporting windows — the delta is the rebuild.

04 · Creative

Before & after, on the same sender.

Same brand, same audience — a redesigned creative system that's legible in the inbox, scalable across flows, and consistent with the positioning on-site.

Before

Text-heavy layout, inconsistent hierarchy, product details buried.

After

Editorial hero, clear hierarchy, product-first modules, repeatable system across flows.

05 · What this unlocked

Email is no longer a risk. It's the engine.

In 58 days we moved Étoile Milano from a channel that was quietly losing reputation and money to a compounding revenue engine — flows carrying the P&L, campaigns amplifying, and a 5× larger list built on engagement, not noise.

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