How to Measure the Performance of Transactional Emails

Mashkoor Alam
ByMashkoor Alam

Updated:

4 mins read

Updated:

4 mins read

Summarize with AI

Transactional emails like sign-up confirmations, OTPs, and order updates, are some of the most opened and actioned emails in a user’s inbox. But despite their importance, many teams don’t go beyond verifying if the email was “sent.”

If you’re not measuring how your transactional emails perform after hitting send, you’re missing out on valuable insights. These emails are often key conversion points, and optimizing their performance can significantly improve user experience, retention, and even revenue.

What is a transactional email?

A transactional email is a one-to-one, event-triggered message sent to a user after they take a specific action. These are not promotional or batch emails they’re timely, personal, and often expected.

Common examples include:

  • Sign-up confirmation emails

  • Password reset links

  • Order and shipping updates

  • Payment receipts and invoices

  • OTPs and account alerts

Because of their utility and timeliness, transactional emails typically see higher open and engagement rates than marketing emails, making them a crucial touchpoint to track and optimize.

How to measure transactional email performance

To understand how your transactional emails are performing, you need to look beyond delivery and follow the full user journey — from trigger to interaction. Here’s a step-by-step breakdown of what to track:

1. Emails sent

This shows the number of emails triggered and dispatched from your system. A sudden drop in sent emails could indicate an issue with how events are configured.

2. Emails delivered

Delivery rate tells you how many of those sent emails actually reached the user's inbox. Poor delivery could mean problems with sender authentication, domain setup, or user data quality.

3. Emails opened (AMP vs HTML)

Open rate indicates how many recipients viewed your email. Mailmodo lets you track this separately for AMP and HTML versions, helping you assess which format is more engaging.

Low open rates may signal issues with your subject line, sender name, or inbox placement.

4. Emails clicked

Click rate shows how many users clicked on any link or button within your email, such as confirming an email address, viewing an invoice, or tracking an order..

5. In-email interactions and form submissions

If you're using AMP-based emails with interactive elements — such as forms, polls, or feedback widgets — you can track how many users completed an action directly within the email.

This goes beyond a click and reflects true intent and engagement. It’s especially useful for things like:

  • Onboarding surveys

  • Preference updates

  • Post-purchase feedback

Tracking how these metrics evolve over time helps you benchmark performance and spot underperforming campaigns.

Are your password reset emails consistently underperforming? Is engagement improving after template updates? These insights guide optimization efforts.

Where to measure the performance in Mailmodo

In Mailmodo, you can track transactional email performance under a campaign, go to trigger Emails. Within this section, three main tabs provide comprehensive insights:

Transactional campaign dashboard

This is the primary dashboard that offers a high-level summary of how each transactional campaign performs.. You can view:

  • Overview of scheduled, sent, delivered, opened, clicked, submissions, bounces, unsubscribes, and blocked emails

  • Engagement trends over time

  • Top email clients used by recipients

  • Link performance

Submissions tab

For AMP emails with interactive elements, the Submissions tab shows how many users completed embedded actions — like submitting a form or survey.

You can also track:

  • Offer title

  • Offer description

  • Submission time

  • Submission type and source

Click Map

Mailmodo’s Click Map shows a visual breakdown of where users are clicking within your email. Within the analytics, you will get:

  • Overview of link performance for HTML and AMP emails across all devices

  • Unique clicks on web links

  • Detailed link performance

Final thoughts

Transactional emails aren’t just operational messages — they’re high-value interactions with engaged users. When measured properly, they become powerful levers to improve conversions, user trust, and lifetime value.

With Mailmodo, you can track every part of the journey — from send to submission — using intuitive dashboards built specifically for triggered and transactional campaigns.

If you're ready to unlock the full potential of your transactional emails, Mailmodo gives you the data and tools to do it.

What should you do next?

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Table of contents

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What is a transactional email?
How to measure transactional email performance
Where to measure the performance in Mailmodo
Final thoughts

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