Email Subject Lines: What Affects Your Open rate?

What are the best strategies when it comes to email subjects? What is the ideal subject length? Should it be personalized? These are some of the mysteries of the modern marketers.
Sophie Lamarche
1 May 2015
Omni-Channel Marketing Campaign
1 min 40
objets de courriels   quest ce qui affecte votre taux douverture

What are the best strategies when it comes to email subjects? What is the ideal subject length? Should it be personalized? These are some of the mysteries of the modern marketers. If you did some research on the web, you have probably read different opinions and statistics. The reason is quite simple – Every company is different and its interaction with its target public is as unique. This is why we usually give the same answer when we are asked these questions: there is no miracle recipe. The best way to learn what works for you is to test it!

However, to satisfy those who enjoy numbers, here are some statistics from emails sent from our clients via the Openfield application in 2015.

Subject length

Email subject length

Open Rate by lengthClickthrough Rate by length

We can see from these statistics that the subject length has hardly any impact on email open rates. The highest open rate of 28.31% belongs to subjects between 50 to 74 characters while the lowest, close behind with 27.11%, relates to subjects containing less than 24 characters.

However, the click-through rate, calculated on delivered messages, shows a highest trend for either very short or very long subjects.

Subject personalization

Personalization Open Rate and Click-through Rate

The subject personalization slightly raises the email average open rate. Adding the first name or a personalized element in the subject line is a good way of getting your contacts’ attention, so hard to get these days. As you can see in this chart, the click-through rate also increases when the subject line is personalized.

Even if adding personalization to the subject line is a good way of improving your open rate, the most challenging remains to find the best subject matter. Enticing curiosity, creating urgency and announcing important information are some of many tricks to create efficient subject lines.

Happy testing!

Find out how your company can benefit from Dialog Insight.

Read also

Security and conformity

Email Marketing and Environmental Impact: Reducing Weight Becomes a Priority

Email marketing is a powerful tool, but its environmental impact is often underestimated. Between data storage, information transfer, and display on devices, every campaign generates a digital footprint. Discover why reducing the weight of your emails is becoming an essential practice and how to optimize your campaigns to reconcile marketing performance with ESG responsibility.

News

Discover RCS (Rich Communication Services)

Upgrade to the next generation of text messaging with richer, more interactive and engaging mobile experiences.

RCS. Create. Launch. Convert.

Customer Data Platform

CRM, CDP, and marketing automation: who does what?

CRM, CDP, and marketing automation are often confused, even though they play very distinct roles. This article clarifies their differences and complementarity, and explains how to combine them to build a high-performing marketing strategy that is truly data-driven.

Omni-Channel Marketing Campaign

Why you should do video marketing (B2C and … B2B !)

Communication through video is much more profitable than all other formats available. Let’s praise the potential of video marketing and why it should be used in all phases of the buying process.

Personalization

Personalization, a Child’s Play for Grown-Ups!

Personalization positively impacts customer's engagement with a loyalty program and their concentration of purchases. It's the key to relevance, and in 2021, you can't ignore it.

Security and conformity

Data Security: The Legal and Strategic Responsibilities of Businesses  

With the increasing electronic sharing of personal information across various digital platforms, cybersecurity threats are becoming more frequent and their consequences more severe. Privacy incidents are no longer isolated events. It is essential to be prepared to face them in order to minimize their risks and impact.

New at Dialog Insight

Every message, on the right channel, at the right time — automatically.

What if your campaigns could find on their own the ideal channel and the perfect moment to generate more impact?With Smart Channel and Omnichannel STO, your campaigns become more engaging and more effective: