How Much Time Do Employees Spend Writing And Rewriting Emails?

The hidden cost of rewriting emails isn't just the minutes spent revising. It's the mental energy burned that could have been spent on work that actually matters.

The Real Cost of Getting It Right

Email isn't broken because we're using it wrong. It's broken because we know exactly what's at stake when we get it wrong.

The numbers tell part of the story. A 2018 Adobe survey of more than 1,000 US white-collar workers found that respondents spent an average of 3.1 hours each weekday checking work email. Earlier McKinsey Global Institute research estimated that "interaction workers", including managers, professionals and salespeople, spent approximately 13 hours per week writing, reading and answering email. That represented around 28% of their working time. Neither figure isolates the time spent rewriting messages, but together they show how much of the working week email can consume.

However, they don't isolate the exhausting bit i.e. the rewriting. The second-guessing. The fifteen minutes spent crafting three sentences to a colleague you've worked with for years because you're trying to be clear without sounding cold, direct without sounding aggressive, urgent without sounding panicked.

Here's what happens when you multiply caution by scale. Consider a hypothetical mid-sized company with 150 employees, each spending 20 minutes per working day rewriting emails: adjusting tone, rephrasing requests and softening language they worry might land wrong. That adds up to 50 employee-hours per day across the organisation. At an average employment cost of $50 per hour and 260 working days per year, the estimated annual cost would be $650,000.

You can do that same calculation for yourself:

number of employees × daily minutes spent rewriting ÷ 60 × average hourly cost × working days per year.

A 500-person organisation using the same assumptions would estimate a cost of approximately $2.17 million per year.

The calculation does not prove that every rewriting minute is wasted. Some revision is necessary and valuable. Its purpose is to show how even a modest daily assumption can become a material organisational cost that is worth measuring.

When Every Email Becomes a Negotiation With Yourself

Not all emails take the same amount of energy. Confirming a meeting time or forwarding a document doesn't require much thought. But the moment an email carries weight, such as delivering critical feedback, declining a request, clarifying a misunderstanding or managing up to senior leadership, the time investment changes dramatically.

Most large studies measure total email use, rather than separating the first draft from the time spent adjusting tone or anticipating how a recipient might react. That makes rewriting a real but largely hidden part of the figures above.

The reason for this is that, we're trying to control how those words will be interpreted by someone who can't see our face, hear our tone, or ask a clarifying question before they react. That's cognitive load most of us weren't trained to carry. The rewriting isn't confined to the initial draft either. When the first message is ambiguous or lands badly, the clarification becomes another cycle of drafting, reviewing and second-guessing.

Then there are the interruptions. A University of California, Irvine study of 24 information workers found that people often moved to other activities after being interrupted and took an average of more than 23 minutes to return to the original task. This does not mean that every email automatically destroys 23 minutes of productivity, but it shows how interruptions can create extended chains of task switching. In a later American Psychological Association interview, researcher Gloria Mark reported that people in her research checked email an average of 77 times per day.

It's the mental switching cost, the recovery time after being pulled out of deep work, and the energy spent managing your own internal dialogue about whether you've said the right thing the right way.

The Friction Between What You Mean and What You Write

The gap between intent and reception is where most email friction lives.

You write an update to your project team that feels clear and action-oriented. It lands as vague and demanding. You send a question to a vendor that you think is direct. They read it as impatient. You ask your manager for clarification on priorities, and it's received as pushback.

None of that is because you're a poor communicator. It's because email strips out the context that makes communication work like body language, vocal tone, timing and shared presence. What's left is text that each recipient interprets through their own lens, shaped by their current stress level, their relationship with you, and whatever else happened in their inbox that morning.

A peer-reviewed study published in the Journal of Personality and Social Psychology found that email senders overestimated how accurately recipients would interpret the intended tone. In one experiment, senders expected recipients to identify the tone correctly 78% of the time, while recipients achieved 56% accuracy. That's close to a coin flip, despite the senders' confidence.

This is why so many emails get rewritten. We're trying to compensate for a medium that wasn't designed for nuance. We add extra phrases to soften a request. We insert qualifiers to avoid sounding too certain. We write three versions of the same sentence trying to find the one that won't be misread.

And even after all that effort, we still send messages that create unnecessary back-and-forth. The Adobe research cited earlier measures overall time spent checking work email, but it does not identify how much of that time is spent clarifying or correcting messages. Organisations can see email volume, but they rarely measure the communication failures contained within it.

The cost compounds when those miscommunications reach leadership. Executives spend even more time crafting sensitive emails because the stakes are higher. A poorly worded message to a direct report can erode trust. A misread update to the board can create unnecessary concern. So they rewrite, workshop with colleagues, or avoid sending the message altogether until they can deliver it in person.

What This Does to Your Team Over Time

The organisational cost of unclear email communication isn't just measured in hours. It's measured in stalled projects, defensive communication patterns, and the slow erosion of trust that happens when people stop saying what they actually mean.

A 2018 Economist Intelligence Unit survey commissioned by Lucidchart found that 44% of respondents had experienced delays or failures to complete projects because of communication barriers. Another 18% reported that communication barriers had contributed to lost sales. The survey covered communication broadly, not email alone, so it demonstrates the organisational consequences of poor communication rather than the isolated cost of email.

When email becomes a source of friction rather than a tool for clarity, teams adjust. They become more cautious. They add more people to CC lines for protection. They schedule meetings to say things they don't trust email to carry. They rewrite messages not to improve clarity, but to avoid being misunderstood in ways that could have career consequences.

A Watson Wyatt Communication ROI study found that companies categorised as highly effective communicators produced 47% higher total returns to shareholders over five years than the least effective communicators. This was an association, not proof that communication alone caused the difference, but it indicates that communication quality and organisational performance are closely connected.

There's also the mental load. Constantly managing tone, anticipating misinterpretation, and rewriting messages to protect relationships creates a low-grade cognitive tax that most organisations don't measure. But frontline workers feel it. Managers feel it. And it accumulates into the kind of exhaustion that doesn't show up in productivity dashboards but absolutely shows up in morale and retention.

When your team spends more energy managing how they communicate than what they communicate, you're losing the clarity and candor that make collaboration work.

Building Communication That Arrives the Way It Was Meant

The goal isn't to eliminate email. It's to remove the friction that makes email harder than it needs to be.

Some of that work is organisational. Teams can reduce email rewriting by establishing clearer communication norms, including when to use email versus Slack, what level of formality is expected in internal messages and how to signal urgency without creating panic. Simple agreements about structure and tone can cut down the guesswork that leads to endless drafting.

Another lever is training. Most employees are never taught how to write emails that carry nuance clearly. Investing in communication workshops that focus on clarity, tone management, and how to structure information for busy readers can reduce the need for constant revision.

Encouraging asynchronous video messages for complex or sensitive topics can also help. Tools like Loom allow people to explain context, show their face, and convey tone in ways that text can't. It's not always appropriate, but for the emails that take twenty minutes to write, a two-minute video can often do the job better.

Then there's technology that works with the medium instead of against it. Harmony by Unanimas is designed to address this specific friction. It works inside Gmail and Outlook to help translate the sender's intent for the recipient while preserving the sender's voice. The tool doesn't write emails for you. It helps what you've written arrive the way you meant it, reducing the need to rewrite, second-guess or follow up with clarifications.

Harmony sits inside your existing workflow. It doesn't replace your judgment. It supports the communication you're already trying to do, making it easier to be clear without sounding cold, direct without sounding harsh, and thoughtful without spending fifteen minutes on three sentences.

The aim is to return bandwidth to the work that actually matters. If you run a team where misread emails cost real hours, that's a problem worth solving. The alternative is continuing to treat email friction as an unavoidable cost of doing business, when it's actually a solvable design problem.

Spend Less Time Second-Guessing Every Email

See how Harmony translates your intent for the person receiving it while keeping your voice intact. Try Harmony in the live Gmail or Outlook demo or request access for your team.