Analyzing the ROI of Retargeting Emails: Metrics That Matter

Are your retargeting emails really working? Learn the key metrics to track and how to measure ROI from retargeting campaigns in 2025.

Don’t Just Send Retargeting Emails—Measure What Matters

Retargeting emails are known to increase conversions. But how do you know if they’re actually profitable for your business?

Too often, marketers focus only on open or click rates. While useful, those metrics don’t tell the full story. To understand the true return on investment (ROI) of your retargeting campaigns, you need to track the right KPIs—from revenue to recovery rate to cost-efficiency.

In this article, we’ll break down the top metrics to track, how to calculate ROI from retargeting, and how tools like SenderWiz make it easy to turn data into decisions.

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What Is ROI in Email Retargeting?

ROI (Return on Investment) measures the profit generated from your retargeting emails compared to the time, effort, or cost invested.

Basic ROI Formula:

(Revenue from Campaign - Campaign Cost) / Campaign Cost x 100

A good ROI shows that your retargeting emails aren’t just working—they’re worth scaling.

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Why Measuring Retargeting ROI Matters

✅ Justifies time and resource investment ✅ Helps you optimize future campaigns ✅ Identifies high-performing segments and flows ✅ Allows better budget planning across marketing channels ✅ Shows marketing’s direct contribution to sales

Let’s dig into the essential performance metrics.

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📊 1. Open Rate (OR)

What it tells you: How many recipients opened your retargeting email

✅ Benchmark: 20–35% (varies by industry)

💡 Use subject line rotation with SenderWiz to continuously optimize this metric.

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📬 2. Click-Through Rate (CTR)

What it tells you: How many clicked through to your landing/product page

✅ Benchmark: 2–8%

High CTR = compelling message, strong CTA, or relevant offer.

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🛒 3. Conversion Rate

What it tells you: How many users completed the desired action (purchase, sign-up, etc.)

✅ Track:

• Product purchases

• Form completions

• Trial activations

• Demo bookings

📈 SenderWiz allows URL-based and tag-based tracking to monitor conversions directly.

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💸 4. Revenue per Email (RPE)

Formula: Total Revenue from Campaign / Number of Emails Delivered

This tells you how much each email earns you—and is critical for measuring campaign profitability.

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🔄 5. Cart Recovery Rate (for eCommerce)

Formula: Recovered Sales / Total Abandoned Cart Value x 100

✅ Average range: 10–25% for optimized campaigns

With SenderWiz, you can automate cart recovery emails and track revenue per retargeted user.

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🔁 6. Re-Engagement Rate

What it tells you: How many inactive or cold leads became active again after retargeting

✅ Watch for:

• Increase in open/click activity

• Reduced unsubscribes

• Higher site visits post-email

💡 Use behavior-based re-engagement flows in SenderWiz to reawaken dormant subscribers.

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⏱️ 7. Time to Conversion

What it tells you: How long it takes a user to convert after receiving a retargeting email

Lower time = faster funnel velocity and stronger email performance.

SenderWiz tracks this metric to show how quickly retargeting drives action compared to your baseline.

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🧠 8. Attribution Contribution

Why it matters: Retargeting emails often assist other channels (ads, social, sales). Use multi-touch attribution to see their indirect value.

Examples:

• Email → Pricing Page → Paid Search → Purchase

• Email Open → Brand Recall → Direct Visit → Conversion

📊 SenderWiz allows UTM and behavior tracking to measure email influence in conversions, not just last-touch wins.

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💰 9. Cost per Conversion (CPC)

If you’re spending money on email tools, freelancers, or creative resources, calculate:

Campaign Cost / Number of Conversions

Lower CPC = higher campaign efficiency.

SenderWiz offers affordable automation and built-in design tools—keeping your CPC low while boosting performance.

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Bonus: Build an ROI Dashboard with SenderWiz

Use SenderWiz to:

• Track all key metrics in one place

• Compare retargeting campaigns side-by-side

• Attribute revenue to specific flows

• Visualize trends over time (by segment, industry, or campaign type)

No spreadsheets. No guesswork.

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Final Thought: Data Tells the Truth—If You Know Where to Look

You can’t improve what you don’t measure. And when it comes to retargeting, the best decisions come from clear, real-time data.

With SenderWiz, you’re not just sending emails—you’re tracking what matters most:

• 💵 Revenue

• 🔁 Recovery

• 📈 Conversion

• 📬 Performance across segments

📊 Want to scale retargeting campaigns with confidence? Measure smarter—and let SenderWiz guide the way.

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