Full Screen

Email Testing

More Free Lessons in

Email Marketing View All →

Get cutting-edge digital marketing skills, know-how and strategy

This micro lesson is from one of our globally recognized digital marketing courses.

Start a FREE Course Preview Start a FREE Course Preview
Global Authority

The Global Authority

12 years delivering excellence


245,000+ Members

Join a global community


Associate Certification

Globally recognised


Membership Included

Toolkits, content & more

Digital Marketing - Study Notes:



When testing emails, you can examine different metrics.

  • Subject lines: You can look at your subject lines, tracking what works and what doesn’t. There’s a variety of ways of doing subjects. Which ones worked? Which ones didn’t? Which ones do you want to try again?
  • Offer or content: Again, you’re testing this out, seeing whether the offer sounds good. Does it work?
  • Email creative and layout: Does the email content actually have a creative layout?
  • HTML versus text: Looking at the code. Looking at plain text. What works really well? Have your people look at your email on the most bare-bones device.
  • Email headlines: Take a look at those. Go into different clients and take a look. Your testing is such a massive part of this because it’s where you get to fix things. You get to correct mistakes. You get to iterate. You get to build. You get to see, “Okay, this is what we did before. What can we do again this time in a new way?”
  • From address: Test different addresses to see which ones are most effective.
  • Personalization: Which types of personalization yield the best results?

How do you track, how you measure? How you use those measurements and metrics to iterate and build and evolve your email marketing strategy really says a lot about the work you’re going to be doing when you’re using email for marketing.

Why is spam testing important?

Spam testing is so important. Your email service providers will help you out with this. Sometimes the rules may change on you. So you’re going to be sending, creating, testing, and sending again. It’s going to be this whole process that’s a cycle where you’re going to be creating content, sending it out, testing it, seeing if it goes in spam folders.

What worked in the past may or may not work in the future. And it’s important to understand that. And it’s important to just be okay with that because spam filters are just trying to help make everybody’s experience with email better. And it’s your job to test, send, create and just keep going through that cycle.

Back to Top
Eric Stoller

Eric Stoller is a Higher Education Strategic Communications Consultant and Blogger at Inside Higher Ed. With a background in student affairs, academic advising, wellness, technology, and communications, Eric educates clients and audiences on digital identity development. As a blogger, he generates conversations, answers questions, and provides insight about a variety of tech topics, including Social Media Strategies and Email Marketing.

By the end of this topic, you should be able to:

  • Evaluate the role of email marketing in demand generation and lead conversions 
  • Evaluate marketing emails designs and their effectiveness
  • Appraise the performance of email marketing campaigns

    Data protection regulations affect almost all aspects of digital marketing. Therefore, DMI has produced a short course on GDPR for all of our students. If you wish to learn more about GDPR, you can do so here:

    DMI Short Course: GDPR

    The following pieces of content from the Digital Marketing Institute's Membership Library have been chosen to offer additional material that you might find interesting or insightful.

    You can find more information and content like this on the Digital Marketing Institute's Membership Library

    You will not be assessed on this content in your final exam.


      Applied Email Marketing
      Eric Stoller
      Skills Expert

      Communication expert Eric Stoller will help you to identify the attributes and features of an effective marketing email. You will recognize the importance of professional email design to retain brand reputation and subscribers, and will understand that testing is the basis of every successful email marketing campaign. Eric will then introduce the key metrics and statistics within email reporting, and will help you to identify methods for optimizing the performance of your campaign.