Removing all items from your Outlook archive folder keeps your mailbox organized and reduces storage use. If you’ve been wondering how to empty archive folder in outlook, you’re not alone—many users find this process confusing because Outlook doesn’t offer a simple “Empty Archive” button. This guide walks you through every method, from manual deletion to automated cleanup, so you can reclaim space and declutter your email.
Your archive folder can balloon quickly, especially if you auto-archive old emails. Over time, it might hold thousands of messages you no longer need. Clearing it out not only frees up storage on your server or local drive but also makes searching for important emails faster.
We’ll cover several approaches: using the built-in cleanup tools, manually deleting items, moving archives to a separate file, and even setting up rules to prevent future buildup. Each method is explained step by step, so you can choose what works best for your version of Outlook (2016, 2019, 2021, or Microsoft 365).
How To Empty Archive Folder In Outlook
The most straightforward way to empty your archive folder is to delete all items inside it. However, Outlook treats the archive folder like any other folder—you can’t just right-click and select “Empty Folder.” Instead, you need to select all messages and remove them. Here’s how:
- Open Outlook and navigate to your archive folder. It’s usually listed under “Archive” in the folder pane on the left.
- Click anywhere inside the archive folder to select it.
- Press Ctrl + A on your keyboard to select every email in the folder. If you have thousands of messages, this may take a moment.
- Right-click on any selected email and choose Delete. Alternatively, press the Delete key on your keyboard.
- Check your Deleted Items folder. The messages will move there, not disappear permanently. To fully remove them, empty the Deleted Items folder by right-clicking it and selecting “Empty Folder.”
This method works for most Outlook versions, but be cautious—deleting from archive is permanent once you empty Deleted Items. If you want to keep a backup, consider exporting the archive first (we’ll cover that later).
Using The Archive Cleanup Tool
Outlook includes a built-in feature called “Clean Up Archive” that can remove older items automatically. This is ideal if you want to delete messages older than a certain date without manually selecting everything. Follow these steps:
- Go to the File tab in Outlook.
- Click Info, then select Mailbox Cleanup.
- Choose Archive from the dropdown menu.
- Set a date threshold—for example, delete everything older than 6 months or 1 year.
- Click Clean Up Archive. Outlook will scan and remove matching items.
This tool doesn’t empty the entire archive at once, but it’s great for gradual cleanup. You can run it multiple times with different date ranges until the folder is empty.
Deleting Archive Items In Batches
If your archive folder contains tens of thousands of emails, selecting all at once might cause Outlook to freeze. Instead, delete in smaller batches. Here’s a safe approach:
- Sort the archive folder by date (oldest first) or by size.
- Select a few hundred emails at a time by holding Shift and clicking the first and last item in a range.
- Delete each batch, then wait for Outlook to process before moving to the next.
- After deleting all batches, empty the Deleted Items folder.
This method reduces the risk of crashing and gives you more control. It’s especially usefull if you want to keep some recent archive items while removing older ones.
Emptying The Archive Folder Via Outlook Data File
Your archive folder is actually part of an Outlook Data File (.pst or .ost). You can empty it by managing this file directly. This approach is more technical but works well for power users.
- Go to File > Account Settings > Account Settings again.
- Click the Data Files tab.
- Look for the archive file—it’s usually named “archive.pst” or something similar. Select it and click Open File Location.
- Close Outlook completely.
- In File Explorer, right-click the .pst file and choose Properties. Note the file size.
- Reopen Outlook and delete all items from the archive folder as described earlier.
- After emptying Deleted Items, go back to the .pst file and check its size. It may not shrink immediately because Outlook doesn’t compact the file automatically.
To reclaim the disk space, you need to compact the .pst file. In Outlook, go to File > Account Settings > Data Files, select the archive file, and click Settings. Then click Compact Now. This reduces the file size after deletion.
Using The Mailbox Cleanup Tool For Archives
Another option within Outlook is the Mailbox Cleanup tool, which can find and remove large or old items in your archive. It’s not a direct “empty” function, but it helps you clear space efficiently.
- Go to File > Info > Tools > Mailbox Cleanup.
- Select Find items larger than and set a size, like 5 MB. This shows you oversized emails in the archive.
- Delete those items individually or in bulk.
- Repeat with Find items older than to target aged messages.
This method is slower but more precise. You won’t accidentally delete important emails if you review the list first.
Preventing Archive Folder Buildup
Once you’ve emptied your archive folder, you’ll want to keep it clean. Outlook’s AutoArchive feature can be configured to delete old items instead of moving them to the archive. Here’s how to adjust these settings:
- Go to File > Options > Advanced.
- Under “AutoArchive,” click AutoArchive Settings.
- Uncheck “Run AutoArchive every X days” to disable it entirely, or adjust the settings to delete old items rather than archive them.
- You can also set specific folders to not archive at all by right-clicking the folder, selecting Properties, and choosing “Do not archive items in this folder.”
By controlling what gets archived, you reduce future clutter. Alternatively, you can set up a rule that automatically deletes certain emails after a period, bypassing the archive entirely.
Moving Archive Items To A Separate PST File
If you don’t want to delete archive emails but need to free up space in your main Outlook profile, consider moving them to a separate .pst file. This effectively empties the archive folder without losing data.
- Create a new Outlook Data File: go to File > Account Settings > Data Files > Add.
- Name it something like “Old Archive” and save it to a location with plenty of space.
- Open your archive folder, select all items (Ctrl + A), and drag them to the new .pst file in the folder pane.
- Outlook will copy the items. Once done, delete the original archive folder contents.
This method keeps your emails accessible but removes them from the main archive folder. You can even close the new .pst file when not needed to save memory.
Emptying Archive On Outlook For Mac
Outlook for Mac handles archives differently. The archive folder is often part of the On My Computer folder. To empty it:
- Open Outlook for Mac and go to the On My Computer section in the folder list.
- Find the archive folder (usually named “Archive” or “Local Archive”).
- Select all messages with Command + A.
- Press Delete on your keyboard.
- Empty the Deleted Items folder by right-clicking it and selecting “Empty Folder.”
Note that Outlook for Mac may not have all the cleanup tools found in the Windows version. If you need to compact the database, you’ll have to use the “Rebuild” option in the application’s preferences.
Using Third-Party Tools For Bulk Deletion
If you have a massive archive folder and Outlook is slow, third-party tools can help. Applications like “Kernel for Outlook PST Cleanup” or “Stellar Outlook Cleanup” can delete items in bulk without loading the entire folder. However, be cautious—these tools often require payment and may not be necessary for most users.
Before using any third-party software, backup your Outlook data file. This ensures you don’t lose emails if something goes wrong. Most tools offer a trial version that lets you preview what will be deleted.
Common Mistakes When Emptying Archive
Many users accidentally delete important emails or corrupt their Outlook profile. Avoid these pitfalls:
- Not checking the Deleted Items folder: Deleted archive items go there first. If you don’t empty it, they still take up space.
- Forgetting to compact the PST file: Deleting items doesn’t shrink the file size until you compact it.
- Deleting the archive folder itself: Right-clicking and selecting “Delete Folder” removes the entire folder structure, not just its contents. This can break AutoArchive settings.
- Not backing up before bulk deletion: Always export your archive to a separate .pst file before deleting everything.
If you accidentally delete the archive folder, you can recreate it by going to File > Account Settings > Data Files and adding a new archive .pst. Then configure AutoArchive to use it.
Automating Archive Cleanup With Rules
To prevent future buildup, set up Outlook rules that automatically delete or move emails after a certain period. For example, you can create a rule that deletes emails older than 90 days from specific folders.
- Go to File > Manage Rules & Alerts.
- Click New Rule and select “Apply rule on messages I receive.”
- Choose conditions like “with specific words in the subject” or “sent to a specific distribution list.”
- Under actions, select “delete it” or “move it to the Deleted Items folder.”
- Finish the rule and run it on existing messages if desired.
This approach keeps your archive folder from growing in the first place. You can also combine rules with AutoArchive settings for a comprehensive cleanup strategy.
Recovering Space After Emptying Archive
After you delete all items and empty Deleted Items, your Outlook may still show the same amount of used space. This is because the .pst file doesn’t shrink automatically. To recover the space:
- Close Outlook.
- Go to the folder where your archive .pst is stored (usually in Documents\Outlook Files).
- Right-click the file and select Properties. Note the size.
- Reopen Outlook and go to File > Account Settings > Data Files.
- Select the archive file and click Settings > Compact Now.
- After compaction, check the file size again—it should be significantly smaller.
If you’re using an Exchange account or Microsoft 365, the archive may be stored on the server. In that case, emptying the folder frees up server space immediately, and no compaction is needed.
FAQ: How To Empty Archive Folder In Outlook
1. Can I empty the archive folder without deleting all emails?
Yes, you can move emails to a separate .pst file or use the Clean Up Archive tool to remove only old items. This keeps some messages while freeing space.
2. Why doesn’t Outlook have an “Empty Archive” button?
Outlook treats the archive folder as a regular folder. Microsoft designed it to store emails long-term, so they didn’t include a one-click empty function. You must select and delete items manually.
3. Will emptying the archive folder affect my main mailbox?
No, the archive folder is separate from your inbox. Deleting archive items only removes them from that folder. Your main mailbox remains unchanged.
4. How do I empty the archive folder in Outlook 365?
The steps are the same as for Outlook 2016/2019. Open the archive folder, select all with Ctrl + A, delete, then empty Deleted Items. You can also use the Mailbox Cleanup tool under File > Info.
5. What if I accidentally delete important archive emails?
Check your Deleted Items folder first. If you’ve already emptied it, you may recover emails from the “Recoverable Items” folder in Outlook (for Exchange accounts) or restore from a backup .pst file.
Final Tips For Managing Your Archive
Emptying your archive folder is just one part of email hygiene. Regularly review your archive settings to ensure they align with your needs. If you auto-archive frequently, consider shortening the archive period so fewer emails accumulate.
For business users, check with your IT department before deleting large amounts of archive data—some organizations have retention policies that require keeping emails for a certain time. In such cases, moving emails to a separate file may be safer than deletion.
Remember that emptying the archive folder doesn’t delete emails from your Exchange server if you’re using online archiving. In that scenario, you may need to use the “Purge” option in Outlook Web App to permanently remove items.
By following the methods in this guide, you can effectively manage your Outlook archive and keep your email system running smoothly. Whether you choose manual deletion, automated tools, or file management, the key is to take action regularly rather than letting the archive grow unchecked.