Email Marketing Metrics You Should Be Tracking

Person checking email on their phone.


Email marketing is one of the original tools used in internet marketing, and it still remains a powerful way to reach and engage with your audience.

But how do you know if your email marketing efforts are working?

The answer lies in the data.

Tracking the right email marketing metrics allows you to measure success, identify areas for improvement, and optimize your strategy to achieve better results.

In this guide, we’ll explore the key email marketing metrics you should be tracking and why they matter.

1. Open Rate

Open rate is the percentage of recipients who open your email. It’s the first sign that your audience is interested in what you have to say.

A strong open rate is likely the first sign that you’re doing something right with your email campaign. It reflects how compelling your subject lines are and whether your email is sent at the right time.

If no one is opening your emails, the rest of your content—no matter how great—won’t get a chance to make an impact.

How to Improve Open Rates

Craft Engaging Subject Lines: Your subject line is the first thing people see, so make it count. Test different approaches, from curiosity-driven to straightforward.

Personalize Your Emails: People are inundated with emails. Personalizing your communications with your target audience helps your emails stand out. In fact, according to one study, personalized subject lines are 26% more likely to be opened.

Optimize Send Times: This isn’t an exact science, so experiment with different times of day and days of the week to find out when your audience is most likely to open emails.

2. Click-Through Rate (CTR)

Click-through rate is the percentage of recipients who click on a link within your email.

While your email open rates are a nice place to start to see how your emails are performing, you can’t really tell if your audience’s interest has been piqued until they click on your content.

CTR is a direct indicator of how well your content resonates with your audience. It shows whether your email copy and call-to-action (CTA) are compelling enough to drive further engagement.

How to Improve CTR

Test Different CTAs: Strong, clear calls-to-action are essential. Test different placements, wording, and designs to see what gets the best response.

Segment Your Audience: Not all recipients are interested in the same content. By segmenting your list based on demographics or past behaviors, you can send more relevant content that’s more likely to be clicked.

Incorporate A/B Testing: Test subject lines, email formats, and content styles to determine what drives the highest engagement.

3. Conversion Rate

Illustration of a sales funnel

Conversion rate refers to the percentage of email recipients who complete a desired action, such as making a purchase or filling out a form.

While open and click-through rates are important, conversion rate is the ultimate metric of success. It measures whether your emails are driving real business outcomes, such as sales or lead generation.

How to Measure Conversions

Track conversions using tools like UTM codes and landing page analytics. Integrating email marketing platforms with Google Analytics or your CRM can help you track the user journey from email to conversion.

How to Improve Conversion Rates

Align Email Content with Landing Pages: Make sure you’re delivering what is promised in your email content. The messaging, design, and offers should be consistent from your email to the landing page

Use Strong, Clear CTAs: Make sure you create compelling calls to action that are easy to see.

Personalize Offers: Tailoring offers based on recipient behavior or preferences can significantly increase the likelihood of conversion.

4. Bounce Rate

Bounce rate is the percentage of emails that couldn’t be delivered to your recipients’ inboxes. There are two basic types:

Soft Bounce: A soft bounce is a temporary issue, such as a full inbox or server downtime. These emails might still reach their destination once the issue is resolved, but consistent soft bounces can indicate problems with deliverability over time.

Hard Bounce: A hard bounce occurs when an email is permanently undeliverable. This could be due to an invalid or non-existent email address. These bounces need immediate attention because they signal a major issue with your email list’s quality.

A high bounce rate can harm your sender reputation, making it more difficult for future emails to reach your audience’s inbox. It also means a portion of your list isn’t seeing your emails, which impacts your overall engagement metrics.

How to Reduce Bounce Rates

Regularly Clean Your Email List: Remove inactive, invalid, or non-responsive emails from your list. Use list hygiene services to verify email addresses.

Use Double Opt-In: Make sure your recipients really want to receive your emails by implementing a double opt-in process when they subscribe.

5. Unsubscribe Rate

Unsubscribe rate is the percentage of recipients who opt-out of receiving future emails. While unsubscribes are inevitable, a high unsubscribe rate is a red flag that your content may not be meeting your audience’s expectations or needs. Monitoring this metric helps you gauge the relevance and value of your emails.

How to Reduce Unsubscribes

Segment Your Lists: Make sure that your recipients are only receiving content that’s relevant to their interests or past behavior.

Limit Email Frequency: Avoid overwhelming your audience by sending emails too frequently.

Improve Email Content: Consistently delivering high-quality, useful content can reduce unsubscribes. Regularly assess your emails from the recipient’s perspective.

6. List Growth Rate

List growth rate measures how quickly your email list is expanding over time, accounting for new subscribers and unsubscribes. A healthy list growth rate means your email marketing efforts are reaching new prospects and expanding your brand’s influence. A stagnant or shrinking list can signal that your strategy needs a refresh.

How to Improve List Growth

Offer Gated Content: Provide valuable resources, such as eBooks or webinars, in exchange for email addresses.

Leverage Referral Programs: Encourage your current subscribers to share your content with their network through incentives or social sharing.

Optimize Sign-Up Forms: Make it easy for new users to subscribe by placing forms in prominent locations on your website and ensuring a frictionless sign-up process.

7. Email Sharing/Forwarding Rate

The percentage of recipients who share or forward your email to others.

A high email sharing rate indicates that your content is valuable enough for recipients to want to spread the word. This metric also helps you grow your audience organically.

How to Encourage Sharing

Include Social Sharing Buttons: Make it easy for recipients to share your email content across their social networks.

Create Shareable Content: High-value content, such as exclusive offers or insightful information, is more likely to be forwarded.

8. Spam Complaint Rate

A high spam complaint rate can damage your sender reputation, affecting your ability to reach your audience’s inbox in the future. It’s a clear signal that something in your emails is irritating or irrelevant to your recipients.

How to Avoid Spam Complaints

Ensure Clear Opt-Ins: Only send emails to people who have explicitly agreed to receive them.

Maintain Relevance: Make sure your content aligns with the interests and expectations of your audience.

Follow Compliance Laws: Adhere to email regulations like CAN-SPAM and GDPR to avoid potential legal issues and maintain trust with your recipients.

Tracking the right email marketing metrics is the key to running a successful campaign. By monitoring and optimizing metrics like open rates, click-through rates, and conversion rates, you can refine your strategy, deliver more relevant content, and drive real business results.

It’s important to remember that email marketing isn’t a one-size-fits-all solution. Continuously analyze your data, experiment with new tactics, and adapt to your audience’s evolving preferences.