Email marketing has long been one of the most profitable channels available to ecommerce brands. Unlike paid advertising or social media, it allows you to communicate directly with customers who have already shown interest in your products.
But one question comes up repeatedly when speaking with founders and ecommerce marketers:
How much revenue should email actually generate?
Understanding the benchmarks behind high-performing email programmes can help you identify whether your current strategy is performing well or whether you’re leaving significant revenue on the table.
Why Email Is So Valuable for Ecommerce
Most ecommerce businesses invest heavily in acquiring customers through channels like paid search, social advertising, and influencer marketing.
Email plays a different role.
Rather than focusing primarily on acquisition, email helps maximise the value of the customers you already have. It keeps your brand front of mind, encourages repeat purchases, and builds stronger long-term customer relationships.
Platforms like Klaviyo have become particularly popular among ecommerce brands because they combine customer data, segmentation, and automation in one platform.
According to research published by Shopify, email marketing consistently ranks among the highest ROI marketing channels for online stores, largely because it reaches customers who have already demonstrated intent.
How Much Revenue Should Email Generate?
Across most ecommerce brands, email marketing typically generates between:
20% and 40% of total revenue
Highly optimised programmes can generate 50% or more.
This benchmark is widely referenced across lifecycle marketing studies, including reports published by Klaviyo and other ecommerce lifecycle platforms.
However, the exact percentage will depend on factors such as:
- Product category
- Purchase frequency
- Average order value
- Customer lifecycle length
Brands in categories like beauty, apparel, and supplements often see particularly strong email performance because their products encourage repeat purchasing behaviour.
Flow Revenue vs Campaign Revenue
One of the most important metrics in any Klaviyo programme is the split between automation flows and campaign broadcasts.
Flow Revenue
Flows are automated email sequences triggered by customer behaviour.
Common examples include:
- Welcome series
- Abandoned cart reminders
- Browse abandonment
- Post-purchase follow-ups
- Win-back sequences
For many ecommerce brands, core flows can generate 40–60% of total email revenue.
Automation performs well because messages are triggered by real customer behaviour rather than sent at arbitrary times.
If you’re exploring how lifecycle automation is structured across high-performing brands, our ecommerce email agency services page breaks down how these flows are typically implemented and optimised.
Campaign Revenue
Campaigns are one-off email sends delivered to audience segments, typically around promotions, launches, or seasonal activity.
These still play a major role in ecommerce email marketing but tend to be less predictable than automation flows.
In most programmes, campaigns contribute roughly:
40–60% of total email revenue
The most effective email strategies strike a balance between strong lifecycle automation and well-planned promotional campaigns.
Email Engagement Benchmarks
While revenue is the most important metric, engagement metrics help diagnose how well your programme is performing.
Industry benchmark reports from lifecycle marketing platforms such as Omnisend provide useful guidance for ecommerce marketers.
Open Rates
Open rates have become less reliable due to privacy changes, but they still provide directional insight.
Typical ecommerce benchmarks fall between:
30% – 45%
Highly engaged subscriber lists often exceed these figures, particularly for triggered lifecycle flows.
Click-Through Rates
Click-through rate measures how many recipients actively engage with your email content.
Typical ecommerce benchmarks range between:
2% – 5%
Highly targeted flows, such as abandoned cart reminders, can achieve significantly higher click-through rates.
Conversion Rates
Email traffic often converts better than many other channels because recipients already know the brand.
Well-optimised lifecycle emails frequently produce conversion rates significantly higher than general website traffic.
Customer Retention Benchmarks
One of the biggest advantages of email marketing is its ability to support customer retention.
Strong ecommerce brands typically achieve:
- Repeat purchase rates above 30%
- Significant lifetime value growth among returning customers
Lifecycle flows such as post-purchase education, replenishment reminders, and win-back campaigns are key contributors to these results.
These flows are particularly effective when powered by platforms like Klaviyo because they allow messaging to adapt based on customer behaviour and purchase data.
Signs Your Email Programme Is Underperforming
Many ecommerce brands assume their email strategy is working well until they compare performance against benchmarks.
Common warning signs include:
- Over-reliance on promotional campaigns
- Few or poorly optimised automation flows
- Limited segmentation and personalisation
- Little ongoing testing or optimisation
When these issues exist, email often contributes far less revenue than it should.
What High-Performing Email Programmes Do Differently
Brands with strong email performance tend to share several characteristics.
First, they invest heavily in automation and lifecycle flows that engage customers throughout their journey.
Second, they use segmentation and behavioural data to ensure messages are highly relevant.
Third, they treat email as a core revenue channel, not simply a communication tool.
This often means investing in specialist lifecycle expertise or partnering with teams who focus exclusively on email marketing performance.
Final Thoughts
Email marketing remains one of the most reliable growth channels available to ecommerce brands.
When implemented effectively, it drives predictable revenue, strengthens customer relationships, and increases lifetime value.
Understanding the benchmarks above can help you assess whether your current programme is performing at the level it should be.
If your email revenue is significantly below these benchmarks, there is often considerable opportunity to improve lifecycle flows, segmentation strategies, and automation.
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