# Founders spending too much time on email and Slack: how to get your build hours back

> Founders spending too much time on email and Slack lose their best hours to replies. Why it happens, what it costs, and a routine to get build time back.

URL: https://www.lazur.app/for/founders/problems/too-much-time-on-email-and-slack
Updated: 2026-11-06

Founders spending too much time on email and Slack are usually not slow at replies. They answer all day, in small pieces, so the hours for building never come. The fix is to batch messages into set windows, protect one long block for real work, and make every reply cheaper to write.

## Quick answer

- Microsoft data shows the average worker is interrupted about every 2 minutes by a meeting, email or notification.
- In a Harvard study of 27 CEOs, 24% of work time went to electronic communication.
- Checking email three times a day lowered daily stress in a controlled study of 124 adults.
- Set a Slack notification schedule, close Gmail outside two or three windows, and guard one morning block for building.
- Write shorter replies faster: templates for repeat questions, and dictation or drafts for the rest.

## What too much time on email and slack costs you

- **The product waits.** Every hour in the inbox is an hour not spent on the product, customers or hiring. Early on, you are often the only person who can do the deep work, so nobody else picks it up.
- **Your day turns into pieces.** Microsoft's 2025 Work Trend Index found people are interrupted about every 2 minutes in core hours, around 275 times a day. Building a feature or a model in two-minute slices does not work.
- **Stress goes up even when output holds.** In a lab study at UC Irvine, people kept their quality up under interruptions by working faster. After only 20 minutes, they reported more stress, frustration, effort and time pressure.
- **The work leaks into nights and weekends.** The Microsoft data shows 29% of active workers back in their inboxes by 10 pm. The Harvard CEO study found leaders working an average of 3.9 hours on weekend days. If the day goes to messages, building moves to the evening.
- **Your team copies you.** If the founder answers Slack in seconds, everyone learns that fast replies are the job. The whole company ends up working the same broken way.

## Why it happens

1. **Everyone can reach you, and everyone does.** Investors, customers, candidates, vendors and your own team all have a direct line to you. In a small company there is no assistant or chief of staff in between. Every message lands on the same person.
2. **Volume is high and still growing.** Microsoft telemetry shows the average worker gets 117 emails and 153 Teams messages per weekday, with chat volume up 6% year over year. Founders tend to sit at the top of that curve, not the middle.
3. **You are the bottleneck for decisions.** Many Slack threads end with “what do you think?” addressed to you. When decisions are not written down or delegated, each one comes back as a new message, and the same question gets asked twice.
4. **Fast replies feel like progress.** Clearing ten messages feels productive. Writing a hard spec does not, at least for the first hour. So the inbox wins the moment, and the deep work keeps sliding to tomorrow.
5. **Notifications decide your schedule.** With Slack and Gmail alerts on, other people set your priorities in real time. Each banner asks for a decision about whether to look, and most of the time you look.
6. **Writing replies takes longer than it should.** A thoughtful reply to an investor or a customer complaint can take fifteen minutes of typing and editing. Multiply that by a full inbox and the morning is gone.

## How to fix it

- **Batch email into two or three windows.** Pick fixed times, like 11:30 and 16:30, and close Gmail outside them. In a study of 124 adults, people who checked email three times a day reported lower stress than when they checked as often as they liked.
- **Set a Slack notification schedule.** Click your profile picture in Slack, then Preferences. Under Working hours, open the Allow notifications menu, choose Weekdays or Custom, and set your hours. To pause right now, click your profile picture, hover over Notifications, and pick a duration.
- **Protect one long block for building.** Put a two or three hour block on the calendar most mornings and treat it like a board meeting. Turn on a Focus in System Settings > Focus that silences Slack and Mail during that time.
- **Write decisions down once.** When you answer the same question twice, put the answer in a Notion page and link it next time. Over a few weeks, the docs answer the questions that used to come to you.
- **Set reply expectations in public.** Tell your team you check Slack at set times and that urgent issues should come by phone. Put it in your Slack status. People adjust quickly when the rule is clear and you keep it.
- **Delegate whole inboxes, not single emails.** Route support, recruiting and vendor email to shared addresses that someone else owns. You get a weekly summary instead of every message.
- **Use templates for repeat replies.** Intro requests, investor updates, candidate rejections and “not right now” to vendors repeat every week. Save them as templates in Gmail under Settings > See all settings > Advanced > Templates, then insert them from the three dots menu in the compose window.
- **Shrink replies instead of polishing them.** Most messages need three sentences, not three paragraphs. Write the decision first, then the reason, then the next step. Snooze anything that needs more thought to your next batch window.

## Why founders end up spending too much time on email and Slack

Nobody starts a company to answer email. Yet many founders look back at a week and find the product barely moved. The days were full. They were full of replies.

![Technology, nature and spring. Founders spending too much time on email and Slack](https://www.lazur.app/content-images/problem/too-much-time-on-email-and-slack/founders-spending-too-much-time-on-email-2-ef2e6f.jpg)

The reason is structural. In a small company the founder is the default inbox for everything: investors, customers, hires, vendors and the team's open questions. Slack makes every one of those a ping. Gmail makes every one a badge. Without a system, the most urgent sounding message wins every time, and building is never the most urgent sounding thing.

- **275** interruptions a day from meetings, emails or notifications, about one every 2 minutes in core hours ([source](https://www.microsoft.com/en-us/worklab/work-trend-index/breaking-down-infinite-workday))
- **117** emails the average worker receives a day, most skimmed in under 60 seconds ([source](https://www.microsoft.com/en-us/worklab/work-trend-index/breaking-down-infinite-workday))
- **24%** of CEO work time spent on electronic communication in a Harvard study of 27 CEOs ([source](https://www.mgma.com/articles/test-of-time-harvard-study-reveals-how-ceos-spend-their-days-on-and-off-work))
- **209 min** a day American workers said they spend checking work email in Adobe's 2019 survey ([source](https://www.cnbc.com/2019/09/22/heres-how-many-hours-american-workers-spend-on-email-each-day.html))

## How much time email and Slack really take

Microsoft's 2025 Work Trend Index looked at anonymized Microsoft 365 signals and surveyed 31,000 knowledge workers in 31 markets. The average worker gets 117 emails a day and 153 Teams messages per weekday. Including meetings and notifications, that adds up to about 275 interruptions a day, roughly one every 2 minutes.

Founders are not average workers, and the picture for leaders is no lighter. In a Harvard study, researchers tracked the time of 27 chief executives around the clock. Those CEOs worked an average of 62.5 hours a week. 24% of their work time went to electronic communication, and 72% went to meetings.

**What reaches the average worker in one workday**

- Interruptions: 275 per day
- Chat messages: 153 per day
- Emails: 117 per day

Source: https://www.microsoft.com/en-us/worklab/work-trend-index/breaking-down-infinite-workday

Survey data points the same way. In Adobe's 2019 email study of over 1,000 American workers, people said they spent 209 minutes a day checking work email. Asana's Anatomy of Work Index puts the share of the day spent on work about work, like chasing updates and searching for information, at about 60%.

> **Read the numbers with care:** These studies cover knowledge workers and large-company CEOs, not startup founders alone. They show the pull is common. Your own count from one tracked day will tell you more about your week.

## What constant messaging does to deep work

Gloria Mark and colleagues at UC Irvine interrupted people every two minutes while they worked through an email task. The surprise was that people finished faster, with the same quality. They compensated by speeding up. After only 20 minutes of that, they reported more stress, more frustration, higher workload and more time pressure.

That matches the founder week. You can keep the inbox at zero and still ship something. The cost shows up as a constant hum of pressure, late nights spent on the real work, and decisions made in the gaps between pings. Microsoft found that 52% of leaders say their work feels chaotic and fragmented.

## Founder time management for email: batch it

The fix with the best evidence is the simplest. Check email at set times, not all day. In one experiment, 124 adults, from students to financial analysts and medical staff, took part. For one week, they checked email three times a day. In another week, they checked as often as they liked. Daily stress was lower in the limited week.

1. Pick two or three windows a day, such as 11:30 and 16:30, and put them on your calendar.
2. Quit Gmail or close the tab outside those windows. A closed tab cannot send a badge.
3. In each window, go top to bottom: reply in under three minutes, archive, or snooze to the next window.
4. Anything that needs real thought gets a calendar slot, not a half reply.
5. Leave the window on time, even if the inbox is not empty.

## How to spend less time on Slack without going dark

Slack is harder because it feels like the office. Going silent can feel like abandoning the team. The goal is not silence. It is predictable presence, so people know when you will answer and stop expecting it in seconds.

| Change | Where | Why it helps |
| --- | --- | --- |
| Notification schedule | Profile picture > Preferences > Allow notifications | No pings outside the hours you set. |
| Pause notifications | Profile picture > Notifications > pick a duration | Quiet for a build block, with one click to resume. |
| Status with reply times | Profile picture > Update your status | Tells the team when you will answer. |
| Build Focus on Mac | System Settings > Focus > Add Focus | Silences Slack and Mail on a schedule, across the whole Mac. |
| Gmail templates | Gmail Settings > See all settings > Advanced > Templates | Repeat replies take seconds instead of minutes. |

_Settings that cut email and Slack time for founders on a Mac_

Then change the team habits. Ask for decisions in a single message with the options listed, not a thread that starts with “got a sec?”. Move recurring questions into a Notion page. Use Linear or your issue tracker for work requests, so Slack holds conversation and not the backlog.

## Make every reply cheaper to write

Batching cuts how often you check. The other half is how long each reply takes. Most founder replies are short decisions dressed up in long sentences. Write the decision first, then one line of reason, then the next step. Three sentences cover most investor, customer and team messages.

Speaking is often quicker than typing for these. Try the [speaking vs typing test](https://www.lazur.app/tools/speaking-vs-typing-test) or the [typing tax calculator](https://www.lazur.app/tools/typing-tax-calculator) to see your own numbers. The [guide to writing emails by voice](https://www.lazur.app/blog/how-to-write-emails-by-voice) covers how to talk through a reply so it reads well when written down.

## Where Lazur fits in the founder inbox

Lazur is a voice assistant for the Mac that lives in the notch. In your batch window, open an email in Gmail, hold ⌥ ⌘ and say what you want to reply. Lazur reads the email on screen and writes a draft at your cursor. You read it, change what you want, and press Send yourself.

On a long Slack thread, ask what it is really asking you to decide, and Lazur answers out loud. Hold fn to dictate a longer update. Say “remind me to answer Priya at 4:30” to push a message to the next window, or send a research question off to run in its own Chrome tabs while you build. Lazur does not send messages or click around your apps for you. It makes the writing part faster. See [Lazur for founders](https://www.lazur.app/for/founders), [Gmail for founders](https://www.lazur.app/for/founders/gmail) and [Lazur in Slack](https://www.lazur.app/apps/slack).

## Mistakes founders make when fixing their inbox

- Trying inbox zero every hour. Zero is a fine end-of-window goal, not an all-day job.
- Turning off notifications without telling anyone. The team panics and pings you in three places.
- Moving the chatter to text messages. The interruption just moved to your phone.
- Batching email but leaving Slack open. Most founders lose more time to chat than to email.
- Writing long replies to show care. A clear, short answer sent on time shows more care.

> **Start with one block:** If the full plan feels like too much, protect one build block tomorrow morning. Slack paused, Gmail closed, phone in another room. See how much ships.

## What to do this week

Track one day, set the guardrails on day two, and run the routine for a week. If writing replies is still the slow part, [download Lazur](https://www.lazur.app/download) and try drafting and dictation during your batch windows on the 3-day Pro trial. The [AI chief of staff post](https://www.lazur.app/blog/ai-chief-of-staff-for-founders) has more on running a founder week by voice.

![Laptop, workstation and browsing. Founders spending too much time on email and Slack](https://www.lazur.app/content-images/problem/too-much-time-on-email-and-slack/founders-spending-too-much-time-on-email-3-c763f5.jpg)

## With Lazur

Lazur is a voice assistant for the Mac that lives in the notch. Hold ⌥ ⌘ and ask; it sees your screen, answers out loud, points at buttons and walks you through apps. Hold fn to dictate. Free for 3 days, then $18/month: https://www.lazur.app/download

- “draft a short reply: yes to Tuesday, ask them to send the deck first”: Lazur reads the investor's email on screen and writes a short reply at your cursor for you to check. (Drafts it)
- “draft a reply saying yes to Tuesday at 2 and ask for the deck first”: Lazur reads the email on screen and writes the draft at your cursor in Gmail for you to check and send.
- “hold fn and talk through the investor update”: Clean, formatted text appears at your cursor in Gmail, Slack or Notion, faster than typing it out.
- “what is this thread actually asking me to decide?”: Lazur reads the long Slack thread on screen and answers out loud in a sentence or two.
- “research the three competitors this customer mentioned”: Lazur runs the research in its own Chrome tabs and comes back with a summary and a report while you keep building.
- “remind me to answer Priya at 4:30”: Adds a reminder in Apple Reminders, so the message waits for your batch window instead of your build block.
- “block 9 to 12 tomorrow as build time”: Adds the event to your calendar without opening another app.

## A plan you can start this week

- **Day 1: Measure the leak.** For one day, note each time you open Gmail or Slack. Do not change anything yet. Most founders find the count far higher than they would guess.
- **Day 2: Set the guardrails.** Set a Slack notification schedule, create a Build Focus in System Settings > Focus that silences Slack and Mail, and put a recurring build block on your calendar.
- **Day 3: Tell the team.** Post your new reply windows in Slack and in your status. Agree on one channel for urgent issues, like a phone call.
- **Day 4: Build the templates.** Turn your five most repeated replies into Gmail templates. Move one recurring question into a Notion page and link it next time someone asks.
- **Day 5: Run the batch routine.** Build block in the morning, email and Slack at 11:30 and 16:30, nothing in between. Write short replies, snooze anything that needs thinking.
- **Week 2: Delegate an inbox.** Hand one category, such as support or recruiting email, to a teammate or shared address. Ask for a weekly summary instead of forwards.

## FAQ

### How much time do founders spend on email?

There is little data on startup founders alone. In a Harvard study of 27 CEOs, 24% of work time went to electronic communication. Adobe's 2019 survey found American workers reporting 209 minutes a day checking work email.

### How often should a founder check email?

Two or three set times a day works for most. In a study of 124 adults, checking email three times a day lowered daily stress compared with checking freely. Add a phone channel for anything truly urgent.

### How do I stop Slack from taking over my day?

Set a notification schedule under Preferences > Allow notifications, pause notifications during build blocks, and post your reply windows in your status. Move work requests into an issue tracker such as Linear and recurring answers into Notion.

### Will my team think I am ignoring them?

Not if you tell them the rule and keep it. Predictable reply times and a clear path for urgent issues usually work better than instant but random replies.

### Should I hire an assistant to handle my inbox?

Once volume is high and you can afford it, a person who owns support, scheduling or recruiting email can take a large share off your plate. Before that, shared inboxes and templates get you part of the way.

### Does Lazur send emails or Slack messages for me?

No. Lazur reads what is on screen and writes a draft at your cursor, or types what you dictate. You check it and send it yourself. It does not click buttons or operate Gmail or Slack for you.

### Is Lazur private enough for investor and customer email?

Lazur listens and looks at the screen only while you hold the shortcut. The audio and screenshot go to AI providers to answer and are not stored, and content is never used to train AI models.

## Sources

1. [Breaking down the infinite workday](https://www.microsoft.com/en-us/worklab/work-trend-index/breaking-down-infinite-workday), Microsoft WorkLab, Work Trend Index, checked 2026-11-06
2. [Test of time: Harvard study reveals how CEOs spend their days on and off work](https://www.mgma.com/articles/test-of-time-harvard-study-reveals-how-ceos-spend-their-days-on-and-off-work), MGMA, checked 2026-11-06
3. [Here's how many hours American workers spend on email each day](https://www.cnbc.com/2019/09/22/heres-how-many-hours-american-workers-spend-on-email-each-day.html), CNBC, checked 2026-11-06
4. [Checking email less frequently reduces stress](https://sciencedaily.com/releases/2014/12/141203142644.htm), ScienceDaily (University of British Columbia), checked 2026-11-06
5. [The Cost of Interrupted Work: More Speed and Stress (CHI 2008)](https://www.interruptions.net/literature/Mark-CHI08.pdf), Mark, Gudith and Klocke, CHI 2008, checked 2026-11-06
6. [Anatomy of Work Index](https://asana.com/resources/anatomy-of-work-index), Asana, checked 2026-11-06
7. [Pause notifications with Do Not Disturb](https://slack.com/help/articles/214908388-Pause-notifications-with-Do-Not-Disturb), Slack Help Center, checked 2026-11-06
8. [Set up a Focus to stay on task on Mac](https://support.apple.com/guide/mac-help/set-up-a-focus-to-stay-on-task-mchl613dc43f/mac), Apple Support, checked 2026-11-06