📧 Case Study: How Email Marketing Increased Revenue by 2x for a Growing eCommerce Brand

Client Overview

Industry: eCommerce / Retail Markets: US, AU & EU Services Provided: Email Marketing & Automation (Klaviyo), Retention Strategy Timeframe:  3 Months

Key Results (90 Days)

• Email revenue contribution: 18% → 40% of total revenue

• Revenue from automated flows: 60%+ of all email revenue

• Revenue per subscriber: +27% increase

• Repeat purchase rate: +45%

• Customer Lifetime Value (LTV): +30%

  
  

The Challenge

The client had a basic email setup, but it was underperforming:

• Email drove only ~18% of revenue

• Flows were minimal, poorly segmented, or outdated

• Low repeat purchase rate

• No structured post-purchase or win-back campaigns

  
  

The goal was to turn email into a predictable, revenue-generating channel.

Our Strategy

1. Full Email Audit

We analyzed existing flows, segmentation, and campaign performance to identify opportunities and gaps.

2. Automation System Overhaul

We built behavior-based automated flows:

• Welcome Series: Engage and educate new subscribers

• Browse & Cart Abandonment: Recover lost sales

• Post-Purchase & Cross-Sell: Increase repeat purchases

• Win-Back Campaigns: Re-engage lapsed customers

• Replenishment Flows: Maximize recurring orders

Flows were personalized by behavior, purchase history, and engagement to maximize conversions.

3. Campaign Optimization

• Weekly campaigns aligned with flows

• Promotions, social proof, seasonal pushes

• Consistent branding and tone

  
  

Result: flows and campaigns worked together to create a seamless customer journey.

Results & Impact

• Automated flows generated over 60% of email revenue

• Revenue per subscriber increased by 27%

• Repeat purchase rate improved by 45%

• Email contribution to total revenue grew from 18% → 40%

• Customer LTV increased by 30%

  
  

Email went from being a minor channel to one of the brand’s most profitable revenue drivers.

Why This Worked

1. Automation compounds results – once set up, flows continuously generate revenue.

2. Segmentation & personalization ensures the right message reaches the right customer at the right time.

3. Retention focus turns one-time buyers into loyal repeat customers.

   
   

Takeaway

If your brand isn’t leveraging email strategically, you’re leaving money on the table.RetentionLab helps eCommerce brands turn email into a predictable, high-ROI revenue channel.