Outlook Drafts Folder Duplicating Messages: How to Fix the Sync Issue

You may see multiple copies of the same email in your Outlook Drafts folder. This duplication wastes space and makes it hard to find the correct version. The problem is usually caused by a sync conflict between Outlook and your mail server. This article explains how to stop the duplication and clean up your folder.

Why Outlook Creates Duplicate Draft Messages

Outlook stores draft emails locally on your computer and syncs them with your mail server. Duplication happens when this sync process is interrupted or repeated. A common trigger is a poor network connection. If Outlook saves a draft locally but cannot confirm the save with the server, it may save it again. When the connection restores, both the local and server versions sync, creating two copies.

Using Outlook on multiple devices like a phone and a laptop can worsen this. If both devices try to sync the same draft simultaneously, the server might accept two slightly different versions. Add-ins that auto-save drafts can also create conflicts by saving more often than the standard sync cycle.

The Role of Cached Exchange Mode and IMAP

The duplication issue presents differently based on your account type. For Microsoft 365 or Exchange accounts using Cached Exchange Mode, drafts sync almost instantly. A conflict here usually creates two nearly identical items in the same folder. For IMAP accounts, the sync is less frequent. Duplicates may appear as one draft in an “Outbox” on the server and another in a local “Drafts” folder, making them seem like they are in different places.

Steps to Stop Drafts from Duplicating

Follow these steps to fix the sync setting causing the problem. Start with the main configuration change.

1. Open your Account Settings
   In Outlook, go to File > Account Settings > Account Settings. Select your email account and click Change.
2. Access More Settings
   In the Change Account window, click More Settings in the lower-right corner.
3. Navigate to the Advanced Tab
   In the new dialog box, select the Advanced tab. Look for the setting labeled “Sync settings for folders containing items of these types:”
4. Change the Drafts Folder Sync Interval
   Find the row for “Drafts” in the list. Click the dropdown menu in the Sync Interval column and select a longer time, like “60 minutes” or “Manual.” Click OK to save, then click Next and Finish in the subsequent windows.

Alternative Method: Adjust Send/Receive Groups

If the first method does not work, try disabling scheduled sync for the Drafts folder entirely.

1. Open Send/Receive Groups
   Go to the Send/Receive tab on the ribbon. Click Send/Receive Groups, then select Define Send/Receive Groups.
2. Edit Your Main Group
   Select the group named “All Accounts” or the name of your profile. Click Edit.
3. Deselect the Drafts Folder
   In the list of account folders, uncheck the box next to your Drafts folder. This action stops scheduled send/receive operations from affecting it. Click OK, then Close.

If Duplicate Drafts Keep Appearing

Outlook Creates Duplicates Even After Changing Settings

First, close and restart Outlook to apply the new settings fully. If duplicates persist, a corrupted local data file might be the cause. Create a new Outlook profile via Control Panel > Mail > Show Profiles > Add. Test if the issue occurs in the new profile. If it does not, your old profile is damaged.

How to Safely Clean Up Existing Duplicate Drafts

Manually deleting many duplicates is risky. First, identify the single correct draft you want to keep. Move it to another folder, like your Inbox. Then, in your Drafts folder, press Ctrl+A to select all items. Press Shift+Delete to permanently delete them. Finally, move your saved draft back to the empty Drafts folder. This method prevents accidentally deleting the wrong version.

Duplicates Appear Only on Mobile or Web Outlook

This confirms the server is the source of the conflict. Log into your email account via the web portal, like Outlook on the web. Delete all duplicate drafts from the server-side folder. Then, on your desktop Outlook, force a full sync by right-clicking your Drafts folder and selecting Update Folder. The server cleanup should resolve the issue across all devices.

Manual Draft Management vs. Automatic Sync

Item	Manual Draft Management	Automatic Sync (Default)
Sync Frequency	Only when you manually send/receive or save	Continuously or on a short schedule
Duplicate Risk	Very low	Higher, especially with weak connectivity
Convenience	Low, requires user action to update	High, drafts are saved across devices automatically
Best For	Users on unstable networks or with many add-ins	Most users on reliable office or home networks

You can now stop your Drafts folder from filling with copies of the same email. Adjusting the sync interval in account settings is the most effective long-term fix. For immediate cleanup, use the Shift+Delete method after safeguarding your correct draft. Explore using the Outlook on the web interface to manage drafts if desktop sync problems continue.