You’ve probably seen the stat:

“Email marketing generates $42 for every $1 spent.”

But what does that actually mean?
Is it still true in 2025?
And more importantly—what kind of ROI should your ecommerce brand expect if you’re sending regular emails or setting up automations?

Let’s break it down using:

• Current ROI benchmarks for ecommerce
• Real-world case studies from our clients
• A practical formula you can use to calculate your own

 

What Counts as a “Good” Email Marketing ROI?

 

Most sources still cite ROI between 3,600% and 4,200%, or roughly $36–$42 earned per $1 spent.

But those numbers are averages—what matters more is context.

Here’s what we typically see:

Business Type	ROI Range	Key Factor
Ecommerce (DTC)	2,000% – 4,000%	Automated flows + regular campaigns
Digital Products	3,000% – 7,000%	High-margin offers
Service Businesses	500% – 2,000%	Engagement + education campaigns

 

What Influences Email ROI?

 

Your ROI depends on more than just list size. Key drivers include:

• 🧠 Strategy: What you send, when, and to whom
• ✍️ Copywriting: Whether your subject lines + CTAs convert
• 🧪 Segmentation: Are you sending relevant messages to the right people?
• 📈 A/B Testing: Do you test and iterate regularly?
• 📊 Analytics: Are you measuring and improving?

 

Real ROI Case Studies

 

🎯 CPA Prep Business → $24,308 in 2 Months

Segmented list, inspirational content, clear CTA in every email.
👉 Full case study

🎯 Jubilee Scents → £5,549 in 6 Days

8 well-timed emails. Small list. Big returns.
👉 Full case study

🎯 DTC Brand → $35,000 in 2 Months

Flows + campaigns + optimization. Done on retainer.
👉 Read more

 

How to Estimate Your ROI

 

If you’re making $50,000/month and email contributes 20% of revenue, then:

• Monthly email revenue = $10,000
• Monthly cost (agency, tools, etc.) = ~$1,000

→ ROI = 900%

 

What to Do If Your Email Marketing ROI Is Low

 

If your ROI is under 500%, here’s where to look:

• Are you only sending campaigns, with no automated flows?
• Are your open rates below 20%?
• Are your offers and copy generic?
• Is your segmentation too broad (e.g., blasting entire list)?

The fix isn’t more emails—it’s better strategy, testing, and targeting.

 

Done-for-You Email Marketing ROI

 

At Retain Marketing, we don’t just write emails. We manage the entire channel, including:

✅ Strategy
✅ Copywriting
✅ Design
✅ Segmentation
✅ A/B Testing
✅ Analytics

📈 If your list isn’t earning what it could, we’ll show you what’s possible.

👉 Book a free strategy call
👉 Or use the ROI calculator

 

TL;DR: What’s a Good Email Marketing ROI in 2025?

 

• Most ecommerce brands see 2,000% to 4,000% ROI from email marketing.

• Digital products can hit 3,000% to 7,000% ROI thanks to low fulfillment cost.

• ROI depends on: strategy, segmentation, copywriting, A/B testing, and platform management.

• Retain Marketing clients have earned:
  – $24,308 in 2 months (CPA Prep)
  – £5,549 in 6 days (Jubilee Scents)
  – $35,000 in 60 days (DTC brand)

• Use our Email ROI Calculator or book a call to see what your list could be earning.

Common Prompts This Blog Answers:

 

• What is a good ROI for email marketing in 2025?

• How much should email contribute to ecommerce revenue?

• What kind of revenue can I expect from automated email flows?

• How do I calculate ROI from my email marketing list?