First and Last Messages per Folder Report

The utility shows the dates of the first and last received and sent messages in each selected Outlook folder. The report helps you quickly understand when a folder was first used and when it was last active.

This is useful before cleaning up Outlook, Exchange Server, or Microsoft 365 / Office 365 mailboxes. Instead of moving messages only by date range, you can first check the activity date of each folder and decide which folders are truly inactive.

What does the First and Last Messages per Folder Report show?

The utility creates a table for the selected Outlook folders. For each folder, it shows:

• the folder path;
• the first received message date;
• the last received message date;
• the first sent message date;
• the last sent message date.

The report lets you see folder activity at a glance. For example, a client folder may contain emails from 2015, but if the last received or sent message is from last week, the folder is still active. Another folder may have no messages newer than several years ago and may be a good candidate for archive review.

The utility is a reporting tool. It does not move, archive, delete, or modify folders.

Why check first and last emails in Outlook folders?

Many Outlook mailboxes are organized by client, vendor, project, employee, department, matter, or case. Over time, this creates large folder trees that are hard to review manually.

Checking the first and last email dates helps you:

• find inactive Outlook folders;
• identify old client, vendor, project, or employee folders;
• prepare a mailbox cleanup report;
• review folders before archiving or deleting anything;
• avoid splitting the history of active folders;
• understand which folder structures are still in use;
• document folder activity before mailbox migration or reorganization.

The most important value is the newest activity date. When reviewing the report manually, compare Last Received and Last Sent . The later of these two dates is usually the best indicator of the folder's last email activity.

Find stale client, vendor, project, and employee folders

A folder can contain old emails and still be active. This is common when a company keeps one Outlook folder per client, vendor, project, or employee.

For example, an active client folder may contain contracts, onboarding messages, and historical correspondence from many years ago. If the client is still active, moving only the old messages out of that folder can break the full conversation history and make later searches harder.

With this report, you can review folders by activity instead of by individual message age. A folder with no received or sent messages newer than a selected threshold can be reviewed as a stale folder. A folder with recent activity can remain intact, even if it contains old messages.

Why date range archiving can be risky

A common cleanup method is to move all emails older than a specific date. This works for some mailbox structures, but it can be risky when folders represent ongoing relationships or projects.

If you move all messages older than specific date, you may accidentally move old but still important messages from a folder that is currently active. The folder will remain in Outlook, but its history will be split between the current mailbox and the archive.

The First and Last Messages per Folder Report supports a safer "report first" workflow. You can first identify folders where no messages are newer than your selected date, then decide what to do with those folders as complete units.

How this report helps before archiving Outlook folders

Use this report before mailbox cleanup, archiving, or folder reorganization. It helps you build a list of folders that appear inactive and need review.

A practical workflow is:

1. Select the folders or mailbox area you want to review.
2. Run the report.
3. Sort or filter the results by Last Received and Last Sent .
4. Find folders where neither date is newer than your cutoff.
5. Review the candidate folders before taking action.
6. Archive, move, merge, or delete folders only after confirming they are no longer active.

This approach is especially helpful when you want to preserve folder hierarchy. Instead of moving individual old messages from active folders, you can identify inactive folders and process them as whole folder structures using the appropriate Outlook process or another our utility.

How to use the report

Select the Outlook folders you want to analyze and run the utility. The result is shown as a tabular report.

After the report is created, review the date columns. For mailbox cleanup planning, pay special attention to the newest value between Last Received and Last Sent . If both values are older than your cleanup threshold, the folder may be a candidate for archive or review.

For easier analysis, save the tabular result to CSV or copy it to another application, then sort and filter the report in Microsoft Excel or another spreadsheet editor.

What information is included in the report?

Folder Shows the Outlook folder path. This helps identify the exact folder in the mailbox or data file.

First Received Shows the date of the earliest received message found in the folder.

Last Received Shows the date of the latest received message found in the folder.

First Sent Shows the date of the earliest sent message found in the folder.

Last Sent Shows the date of the latest sent message found in the folder.

If a folder does not contain messages of a particular type, the corresponding date field may be empty.

Outlook, Exchange, and Microsoft 365 mailbox cleanup scenarios

The report can be used in many mailbox review and cleanup tasks:

• finding old Outlook folders before archive planning;
• identifying inactive client or vendor folders;
• reviewing project folders after a project is closed;
• checking employee folders before mailbox reorganization;
• preparing a cleanup checklist for large mailboxes;
• reviewing Exchange Server or Microsoft 365 mailbox folder activity;
• checking folder activity before deleting empty or obsolete folder structures;
• documenting folder dates before migration, backup, or archiving work.

The report does not decide which folders must be archived or removed. It gives you the dates needed to make that decision more safely.

Command line and scheduled reporting

ReliefJet Essentials Professional Edition includes command-line support. Administrators can use the command line for repeatable reporting workflows and combine it with Windows Task Scheduler when periodic mailbox checks are needed.

Before using scheduled reporting in production, configure the utility in the standalone launcher, use the generated command line, and test the output with the exact Outlook profile, mailbox, and folder selection you plan to use.

FAQ

How can I find the last email date in Outlook folders?

Run the First and Last Messages per Folder Report for the folders you want to review. The Last Received and Last Sent columns show the latest received and sent message dates for each folder. For cleanup planning, use the later of these two dates as the practical last activity date.

How can I identify inactive Outlook folders?

Create the report and sort or filter it by Last Received and Last Sent . Folders where both dates are older than your selected threshold, such as two years ago or 12/31/2020, can be reviewed as inactive folder candidates.

Can this utility archive or move folders automatically?

No. This utility builds a report. It does not move, archive, delete, merge, or modify Outlook folders or messages. Use it as a safe first step before taking action with Outlook or other mailbox cleanup tools.

How is this different from moving emails by date range?

Moving emails by date range works on individual messages. This can split the history of an active client, vendor, or project folder if the folder contains old messages and recent messages. This report helps you review the folder's newest activity date first, so you can decide whether the whole folder is inactive.

Can it help avoid archiving old emails from current clients?

Yes. If a current client folder contains old emails and recent emails, the report will show recent activity in Last Received or Last Sent . This helps you avoid moving only the older messages out of an active folder and breaking the client's full email history.

Does the report include sent and received messages?

Yes. The report includes separate columns for received and sent message dates: First Received , Last Received , First Sent , and Last Sent .

Can the report be used for Exchange or Office 365 mailboxes?

Our tool works with Outlook folders as well as Office 365 and Exchange Server folders and mailboxes. Use the appropriate Outlook profile, mailbox permissions, and folder selection when creating the report.

Can the results be exported or used in Excel?

For tabular reports, the utility allows saving results to a CSV files and using them in applications such as Microsoft Excel.