A free tool

What your inbox costs you.

Tick the tools you use. See the hours a day the reading alone takes, from published averages. It runs in your browser and sends nothing anywhere. Share the link; the answer is on the page.

Your tools

Everyone has email. Tick the rest.

Published data exists for Teams, not Slack. The two do the same job for the same people, so we use the Teams figure to estimate Slack.

These are published averages. Not you? Change them.
Microsoft Work Trend Index, 2025
Microsoft Work Trend Index, 2025
Estimated from the Teams figure. See the footnote.

Runs in your browser. Nothing is sent anywhere.

What it costs you
2.0 hours a day just reading what reaches you, before a single reply.
9.8 hours a week.

The receipt: 117 emails a day, at up to 60 seconds each for email and 30 seconds each for chat. Microsoft's 2025 Work Trend Index and its own Viva Insights accounting. Change nothing and this is the average worker; your day may run higher or lower.

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How the math works

One number, one receipt.

Microsoft's 2025 Work Trend Index puts the average worker at 117 emails a day, most skimmed in under a minute, and 153 Teams messages a weekday. We count each email at up to 60 seconds and each chat at 30 seconds, the figure Microsoft's own Viva Insights uses. Email is always in; Teams and Slack are in when you tick them. That is the hours a day. Times five is the week.

Published data exists for Teams, not Slack. The two do the same job for the same people, so we use the Teams figure to estimate Slack. The receipt says so whenever Slack is ticked. If you put in what an hour of your time is worth, the hours become dollars a month over 21.7 working days. Every published number is editable under "Not you? Change them."

What it does not claim

It does not say how much time you would get back with any tool, ours included. There is no receipt for that yet, so the page does not say it. It shows what the problem costs, from numbers you can see and change.

The published averages are for all information workers, not founders or executives in particular. Nothing published says your role runs higher, so the page does not say that either. Change the fields to yours; the math follows.

Sources: Microsoft Work Trend Index, June 2025 special report; Microsoft Viva Insights personal-insights accounting.

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