Outlook Email Statistics Report: How to Get One

An Outlook email statistics report shows measurable data about your email activity, such as messages sent and received, response times, and mailbox size. You can generate one by using Outlook’s built-in folder properties, creating custom views, or exporting data to Excel for deeper analysis. This article explains what statistics Outlook can show you, how to access them, and what the numbers actually mean.

Formula

This calculator works out daily email volume and the ratio of sent to received messages over a given period.

• Average sent per day = Emails sent ÷ Time period (days)
• Average received per day = Emails received ÷ Time period (days)
• Sent to received ratio = Emails sent ÷ Emails received

Variables:

• t – time period in days (e.g., 30 for a month)
• s – total emails sent in that period
• r – total emails received in that period

Worked Example

Using the default values from the calculator:

1. Time period = 30 days, emails sent = 120, emails received = 340
2. Average sent per day = 120 ÷ 30 = 4.0 emails/day
3. Average received per day = 340 ÷ 30 = 11.3 emails/day
4. Sent to received ratio = 120 ÷ 340 = 0.35

So, over 30 days, you sent about 4 emails per day and received about 11 per day. The ratio tells you that for every email you sent, you received roughly three.

What Outlook Can Show You Natively

Outlook does not have a single button that prints a full “email statistics report.” Instead, it offers several built-in tools that give you specific numbers:

• Folder Properties – Right-click a folder (like Inbox or Sent Items), choose Properties, then the General tab. It shows the total size of the folder and the number of items it contains. This is the quickest way to see how many emails are in a folder.
• View Settings – In any folder, go to the View tab, click View Settings, then Group By. You can group by “From” or “Received” to see counts per sender or per day. The group headers show the number of items in each group.
• Search Folders – Create a search folder for “Sent by me” or “Received today” to get a live count of matching messages.
• Mailbox Cleanup – Under File > Tools (or the Info tab in some versions), you can see mailbox size and the size of individual folders. This helps identify where storage is being used.

These tools give you raw counts and sizes, not analytical metrics like response time or average message length. For those, you need to export data.

How to Export Email Data to Excel

If you want to calculate averages, trends, or response times, you need to export your email data to a spreadsheet. Here’s how:

1. In Outlook, select the folder you want to analyze (e.g., Inbox or a specific project folder).
2. Press File > Open & Export > Import/Export.
3. Choose Export to a file, then Comma Separated Values (CSV).
4. Select the folder you want to export. You can include subfolders if needed.
5. Save the CSV file, then open it in Excel or Google Sheets.

Once in Excel, you can use pivot tables to count messages by sender, by date, or by subject. You can also calculate response times if you have both sent and received dates in the same file (though Outlook exports sent and received items separately, so you may need to combine them).

Note: The CSV export includes fields like Subject, From, To, Sent, Received, and Size. It does not include read receipts or open rates – those are not available in Outlook’s standard export.

What Statistics Are Useful for Different People

The kind of report you need depends on your goal:

• Individual users – Track how many emails you send and receive per day, your average response time, and which senders fill your inbox. This helps with time management and spotting spam sources.
• Managers – Look at team response times, volume per team member, and peak hours. You can export shared mailboxes (if you have access) and analyze them the same way.
• IT administrators – Use mailbox size reports to enforce storage limits. You can also use PowerShell with Exchange Online to generate detailed reports for all users (e.g., Get-MailboxStatistics). This is beyond the scope of the Outlook client itself.
• Sales or support teams – Measure response time to customer inquiries, which is often a key performance indicator. You can calculate this by comparing the received time of an email to the sent time of your reply.

Remember that Outlook’s built-in tools are for individual mailboxes; for org-wide statistics you need admin tools like Exchange Admin Center or third-party reporting add-ins.

Common Mistakes and Limitations

When working with email statistics, watch out for these pitfalls:

• Counting duplicates – If you export both Sent Items and Inbox, the same conversation may appear twice. Use a unique message ID to deduplicate if possible.
• Time zones – Outlook stores dates in UTC internally but displays them in your local time. When exporting to CSV, the times may be in UTC or local depending on the version. Always check and convert if needed.
• Deleted items – The count in Folder Properties includes only what is currently in the folder. If you delete emails regularly, your historical statistics are lost.
• Search vs. actual count – Search results may not include all items if the index is not up to date. Use Folder Properties for a definitive count.
• Response time calculation – If you reply to an email three days later but the original was received on a Friday, your response time might look worse than it is. Consider business hours only.

Also, the CSV export does not include the body of the email, so you cannot analyze content length or keywords without additional processing.

Alternatives to Native Outlook Features

If you need more advanced statistics than Outlook provides, consider these options:

• Power Automate – You can create flows that log every email to a SharePoint list or Excel table, then build dashboards on top.
• Microsoft 365 Admin Center – For organization-wide reports, admins can see activity reports (e.g., email activity per user) without exporting from Outlook.
• Third-party add-ins – Tools like Viva Insights (included in some Microsoft 365 plans) show collaboration patterns, including email volume and response times. Many other add-ins exist, but they are not built into Outlook.
• Manual tracking – For a simple report, you can create a rule that moves certain emails to a folder and then count them manually. This is low-tech but works.

Each approach has trade-offs. Native features are free and private, but limited. Third-party tools are more powerful but may require subscriptions and access to your data.

Frequently Asked Questions

Can I see how many emails I sent in a specific month?

Yes. Go to the Sent Items folder, click on the Sent column header to sort by date, then manually count the rows for that month. For a precise count, use the View Settings to group by month, which shows the count per group.

Does Outlook track open rates or read receipts?

No. Outlook can request read receipts, but recipients can decline them, and there is no built-in report that shows open rates. For that, you need an email marketing service or a tracking add-in.

How do I find the total size of my mailbox?

In Outlook, go to File > Info (or Account Settings in older versions) and look for the mailbox size. You can also right-click the mailbox root in the folder pane and choose Data File Properties to see folder sizes.

Can I export my email statistics automatically?

Yes, you can use Power Automate to create a recurring flow that exports new emails to a spreadsheet or database. This gives you a live dataset without manual exports.

Why does my folder item count differ from the search results?

Search results depend on the indexing status and may exclude items that are not indexed yet. Folder Properties shows the actual number of items stored. If the index is fully up to date, they should match.

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in t | Time period (days) | days | 30 | 1
in s | Emails sent | - | 120 | 0
in r | Emails received | - | 340 | 0
out avg_s | Average sent per day | emails/day | s / t | 1
out avg_r | Average received per day | emails/day | r / t | 1
out ratio | Sent to received ratio | - | s / r | 2