Your sent emails are missing from the Sent Items folder on other devices. This common IMAP issue occurs because Outlook is saving sent messages to a local folder not recognized by your mail server. The problem is caused by incorrect folder mapping between Outlook and the IMAP server. This article explains how to redirect your sent mail to the correct server folder so it syncs everywhere.
Key Takeaways: Fixing IMAP Sent Folder Sync
- File > Account Settings > Account Settings > Change Folder: Redirects where Outlook saves sent messages for a specific IMAP account.
- Sent Items to [IMAP] Sent: The correct mapping ensures your sent mail is stored on the server and visible on all devices.
- Outlook Data File (OST/PST): A local copy of your mail; sent items saved here do not sync with the IMAP server.
Why IMAP Sent Items Save Locally Instead of on the Server
IMAP is designed to keep your email folders synchronized between your computer and the mail server. When you send a message, your email client must save a copy to a specific “Sent” folder on the IMAP server. Outlook sometimes defaults to saving this copy in a local Outlook Data File instead. This local file is an OST file for Exchange-type accounts or a PST file for POP/IMAP archives. Messages saved there are only on your computer.
The root cause is a misconfiguration in Outlook’s folder mapping. Each IMAP account has a set of special folders, like Inbox, Sent Items, Drafts, and Junk Email. Outlook must know which server folder corresponds to each local folder. If the “Sent Items” folder is mapped to a local location, no copy is uploaded to the server. This breaks synchronization with your phone, webmail, or other computers using the same account.
How Outlook Handles IMAP Special Folders
When you set up an IMAP account, Outlook attempts to auto-detect the server’s special folder names. Most servers use standard names like “Sent”, “Sent Messages”, or “Sent Mail”. Outlook creates a local representation of these folders under the account name in the folder pane. The mapping tells Outlook, “Save sent messages to the server folder named ‘Sent’.” If this link is broken or set to “Outlook”, messages are stored only on your PC.
Steps to Remap Your Sent Items Folder to the IMAP Server
Follow these steps to change where Outlook saves copies of your sent messages for a specific IMAP account. You must complete this process for each affected account in your profile.
- Open Account Settings
In Outlook, go to File > Account Settings > Account Settings. This opens the dialog box where you manage all email accounts. - Select Your IMAP Account
In the Email tab, click to highlight the IMAP account that has the sent items sync problem. Then, click the “Change Folder” button located above the list of accounts. - Choose the New Sent Items Location
A new window titled “Change Folder” will appear. It shows a folder tree. Navigate and click on the correct Sent folder under your IMAP account. It is often named “Sent”, “Sent Items”, or “Sent Mail”. Click OK to confirm the selection. - Close the Dialogs
Click Next in the Account Settings window, then click Finish. Close the Account Settings dialog box by clicking Close. - Test the Fix
Send a new test email. The sent message should now appear in the Sent folder under your IMAP account in the folder pane. Verify it also appears in your webmail or on your mobile device.
Alternative Method via Folder Properties
If the “Change Folder” button is unavailable, you can set the folder directly. Right-click the “Sent Items” folder under your IMAP account in the folder pane. Select Properties. Go to the General tab and ensure the folder name is correct. Then go to the Synchronization tab. Confirm the setting “This folder is available for use with” is set to your IMAP account, not “Outlook”.
If Sent Items Still Do Not Sync After Remapping
Outlook Continues Saving to Local Folders
Check your default saving location. Go to File > Options > Mail. Under the “Save messages” section, see where “Save copies of messages in the Sent Items folder” is pointing. If it says “Outlook”, change it to the correct IMAP Sent folder. Also, verify the account’s send/receive settings. Go to File > Options > Advanced > Send/Receive. Click the “Send/Receive” button. Ensure the group for your IMAP account is set to include the “Sent Items” folder for synchronization.
Server Folder Has a Non-Standard Name
Some email providers use unique names for special folders. You may need to create a new folder on the server and map to it. In the folder pane, right-click on your IMAP account name and select “New Folder”. Name it “Sent Items”. Then, use the steps above to map your Sent Items to this newly created server folder. The server will recognize it as the correct location for sent messages.
Messages Are Stuck in the Outbox
If messages are not sending at all, the Outbox may be blocked. Go to the Send/Receive tab and click “Send/Receive All Folders”. If messages remain stuck, restart Outlook. For persistent Outbox issues, try working in Online Mode temporarily. Go to File > Account Settings > Account Settings. Double-click your IMAP account. Uncheck the box for “Use Cached Exchange Mode” or similar. This forces Outlook to communicate directly with the server.
IMAP Folder Mapping vs. Local Storage: Key Differences
| Item | Correct IMAP Server Folder Mapping | Incorrect Local Folder Storage |
|---|---|---|
| Storage Location | Messages are saved on the mail server | Messages are saved only in a local OST/PST file on your PC |
| Sync Across Devices | Sent items appear on webmail, phones, and other computers | Sent items are visible only in Outlook on the original computer |
| Configuration Path | Set via File > Account Settings > Change Folder | Occurs when the default is set to “Outlook” or a local data file |
| Backup and Access | Managed by your email service provider | Your responsibility to back up the local data file |
| Fix Required | One-time folder remapping in Account Settings | Moving old sent items manually and changing the default setting |
You can now ensure your sent emails are stored on the IMAP server and synchronized. Check your Drafts and Junk Email folder mappings using the same Account Settings method. For advanced management, use the Outlook web app to directly create and rename special folders on your mail server, which Outlook will then detect automatically.