With the communication revolution, emails have become a ubiquitous method of communication across various industries. For some, composing an email can be an art form. How long should an email be? There is no set answer to this question, but it’s important to consider the implications of email length on readership and open rates. In this article, we examine the data to better understand the impact of email length on open rates and present some tips to help you write more effective emails.

The prevalence of folk wisdom surrounding email length

There are countless examples of advice on the ideal length of an email. A quick online search yields numerous articles on the subject, often offering a prescribed number of words that an email should have. However, much of this advice is subjective, without any real data behind it. We need to look at data to get a clear and precise idea of how long an email should be.

There is no straightforward answer to the question of how long an email should be. It depends on the message being conveyed, the audience, and the context. Moreover, there are always trade-offs. Longer emails can provide more context and information, but they can also be overwhelming for the reader. On the other hand, shorter emails may not provide enough information or context.

Data collection

To better understand the impact of email length on open rates, we collected data on one hundred thousand bulk emails sent from Buttondown over the last twelve months. We calculated the word count of each email and rounded it to the nearest hundred to create our dataset.

Data analysis

Our data showed that there was no clear correlation between the word count of an email and its open rates. Emails that ranged from 50 to 2500 words had roughly similar open rates of around 30%. However, there was a slight dip in the open rate for emails exceeding 2500 words. This finding is not surprising since longer emails can be intimidating and time-consuming for the reader.

Caveats to consider in interpreting the data

It’s important to keep in mind that our dataset only includes bulk emails. Personal emails may have a different response rate. Moreover, the audience and context of the email are also essential factors to consider when evaluating the ideal email length. Therefore, these findings are not a one-size-fits-all solution, but they can be useful as a starting point.

The interesting findings

Our data revealed that there is no linear relationship between email length and open rates. The most effective emails tend to be of the appropriate length for their content and audience. Therefore, the goal is to write the correct number of words for your email. This finding supports the idea that shorter isn’t always better, and longer is not necessarily worse, but relevance and clarity are crucial.

The Importance of Writing the Correct Number of Words in Your Email

It’s important to tailor the length of your email to the content and audience. Including irrelevant information can lead to a lack of focus, and readers can quickly lose interest in the email. Conversely, if you don’t provide enough information, your email may not fulfill its intended purpose. Therefore, the aim should be to create an email that is neither too long nor too short but is of the correct length to convey the intended message effectively.

In conclusion, the optimal length of an email does not depend on a set number of words or complex algorithms. Instead, it comes down to the context and the resulting relevance of the email. The goal is to keep your email concise, clear, and on-point, while providing enough context and information. Our findings have important implications for both professional and personal email usage, and encourage further exploration into this essential area of communication.

Explore more

Master the Human Edge to Beat Modern Hiring Algorithms

The contemporary recruitment environment requires an unprecedented level of strategic precision to ensure that an individual’s unique value is not discarded by an automated filter before a human eyes the resume. While technology promises efficiency, the reality for many is a grueling cycle of silence and automation. This friction has created a landscape where the standard rules of job seeking

How Will Agentic AI Redefine the Corporate Finance Model?

The relentless pursuit of technological efficiency often leaves the very departments that fund global innovation operating on legacies of fragmented spreadsheets and manual reconciliation efforts. In many high-growth technology organizations, a striking contradiction remains visible where the creators of cutting-edge software still manage their own internal books through labor-intensive processes. This friction creates a bottleneck that limits the speed of

Content Creation Careers Will See Robust Growth Through 2034

The transition from digital hobbyism to institutional media powerhouses has transformed the once-nebulous concept of social media influence into a rigorous, high-stakes corporate discipline that now serves as the primary engine for global brand growth. As of 2026, the digital landscape has shifted from a chaotic frontier of hobbyists into a structured, high-stakes industry where a single piece of media

Why Is CRM and Trading Platform Integration Essential?

The split-second decisions that define success in the modern forex market leave no room for delayed responses or fragmented data streams that hinder a brokerage’s ability to capitalize on high-value client opportunities. Within the first 48 hours of lead registration, a window of opportunity exists where conversion rates are at their peak. However, many brokerages fail to realize that delayed

What Are the Best Transactional Email Platforms for 2026?

The split-second window between a user’s interaction with a mobile application and the arrival of a confirmation email represents the most critical frontier in the battle for modern consumer confidence. In an era where digital services are judged by their responsiveness, the infrastructure supporting automated communication has evolved from a back-end utility into a primary pillar of the user experience.