Which kpi to use to track and optimize email marketing effectively

Feb 20, 2025

Tracking the performance of an email campaign is essential to optimizing your strategy and achieving your goals. Email marketing KPIs help assess the impact of your sends, adjust your actions, and maximize return on investment. But which indicators should you track and how should you interpret them? Discover the key KPIs to monitor for an effective analysis of your campaigns.

Summary

Open rate: measuring interest

The open rate is one of the first email marketing indicators to analyze. It measures the percentage of recipients who opened your email compared to the number of emails delivered. A high open rate indicates a relevant subject line and good deliverability.

  • Formula: (Number of opened emails / Number of delivered emails) x 100
  • Best practices: personalize the subject line, test different approaches, and optimize the sending time.

Click rate: evaluating engagement

The click rate helps assess subscribers' interest in your email content. It is particularly useful for measuring subscriber engagement and the effectiveness of your calls to action.

  • Formula: (Number of unique clicks / Number of delivered emails) x 100
  • Optimizations: include clear and relevant calls to action and test their placement.

Bounce rate: monitoring deliverability

The bounce rate indicates the percentage of undelivered emails. A high bounce rate can harm your domain's reputation and negatively impact your deliverability.

  • Formula: (Number of bounced emails / Number of sent emails) x 100
  • Tips: regularly clean your email list and use email validation tools.

Conversion rate: measuring real impact

The conversion rate measures the percentage of recipients who completed the desired action after clicking a link in your email (purchase, registration, download, etc.).

  • Formula: (Number of conversions / Number of clicks) x 100
  • Best practices: optimize your landing pages and align your messages with your objectives.
IndicatorDefinitionFormula
Open rateMeasures interest in the email(Opened emails / Delivered emails) x 100
Click rateEvaluates subscriber engagement(Unique clicks / Delivered emails) x 100
Bounce rateMonitors deliverability issues(Bounced emails / Sent emails) x 100
Conversion rateMeasures completed actions(Conversions / Clicks) x 100


Short on time? Here's a summary:

In brief: Which KPIs should you track for your email marketing?

  • Open rate: measures recipients' interest in your emails.
  • Click rate: evaluates engagement and interaction with your content.
  • Bounce rate: monitors deliverability issues and list quality.
  • Conversion rate: analyzes completed actions and campaign effectiveness.




Which KPIs should you track to effectively optimize your email marketing performance?

To optimize your emails, track key KPIs such as open rate, click rate, bounce rate, and conversions. These indicators help you adjust your campaigns and maximize your results effectively!