Portfolio & Case Studies — Md Shariar Hossain | Klaviyo Email Marketing
Limited slots: Accepting 3 new Shopify clients in May 2026 — book a free audit before they're gone

Real results from real Shopify stores

Detailed case studies with actual revenue numbers — plus 20 email designs from real client projects. This is the work, not just talk.

$500K+
Email Revenue Generated
30+
Shopify Stores Helped
92%
Avg Inbox Placement
5
Countries Served
Detailed Case Studies

More wins from Shopify stores

A few detailed examples showing the problem, my solution, and the measurable results.

01

Health & Beauty Brand — Deliverability Rescue

Texas, USA · Shopify · US USA
The Problem

Their open rates had crashed from 28% to 8% over six months. Most emails were landing in spam. SPF and DKIM were misconfigured, their sender reputation had tanked, and they were losing thousands in monthly revenue. They were considering shutting down email altogether.

My Solution

I conducted a full deliverability audit, fixed SPF/DKIM/DMARC records, ran a 14-day domain warm-up, cleaned 12,000+ inactive subscribers from the list, and rebuilt their sender reputation with engaged audiences first. I also rewrote their sending strategy to prioritize high-engagement segments.

The Results (in 6 weeks)
60% → 92% Inbox placement rate
+247% Open rate recovery
$0.04 → $1.85 Revenue per recipient
~0% Spam complaint rate
Klaviyo DNS / SPF / DKIM List Cleaning Reputation Repair
"Our inbox placement went from terrible to excellent after Shariar audited our DNS setup and rewrote our sending strategy. The difference in open rates was immediate and significant." — Marketing Lead, Health & Beauty Brand
02

Home Goods Store — Welcome & VIP Flow Rebuild

New York, USA · Shopify Plus · US USA
The Problem

Strong first-time buyers but customers rarely came back. Their welcome flow was a single thank-you email, and they had no VIP recognition for top spenders. CLV was stuck at $87 — far below their $200 industry benchmark. They were losing 70% of customers after the first purchase.

My Solution

Built a 5-email welcome series that educated new subscribers on the brand story, plus a 4-email VIP flow triggered by repeat purchase behavior. Set up RFM segmentation to identify high-value customers automatically. Added personalized product recommendations based on past orders.

The Results (in 60 days)
+22% Repeat purchase rate
$87 → $164 Customer LTV
+89% Email-attributed revenue
38% Welcome flow conversion
Klaviyo Shopify Plus RFM Segmentation VIP Flow
Industries

Niches I've worked with

Diverse experience across Shopify verticals — each with their own retention dynamics.

Pet Care
Grooming, food, supplies
Health & Beauty
Skincare, wellness, makeup
Apparel
Fashion, sustainable wear
Home Goods
Decor, furniture, kitchen
Supplements
Subscription, vitamins
Food & Beverage
Coffee, snacks, gourmet

Want to be the next case study?

Book a free 30-minute audit. I'll review your store, your current email setup, and tell you exactly what's leaving money on the table — no pressure, just a clear plan.