Outlook can slow down significantly if you subscribe to many RSS feeds. Each feed creates a separate folder and downloads new items, which Outlook must process during startup. This article explains how to manage your feeds to reduce the load on Outlook.
You can improve performance by removing unnecessary feeds or changing how they sync. We will cover the steps to review, disable, and delete feeds directly within Outlook.
Key Takeaways: Managing RSS Feeds for Better Performance
- Account Settings > RSS Feeds: View all subscribed feeds in one list and delete those you no longer need.
- Right-click feed folder > Properties > Synchronization: Change the download limit to a lower number to reduce data processed on startup.
- File > Options > Advanced > Send/Receive: Modify the Send/Receive groups to prevent RSS feeds from updating every time Outlook starts.
How RSS Feeds Affect Outlook Performance
RSS feeds in Outlook function like email accounts. Each feed you subscribe to creates a dedicated folder under the RSS Feeds root in your mailbox. When Outlook starts, it checks these folders for synchronization settings and may download new content.
A large number of active feeds increases the workload for Outlook’s startup sequence. This is because Outlook must initialize each feed connection and process its folder structure. The more items stored in these folders, the longer this process takes.
Performance impact is most noticeable in Cached Exchange Mode or with large PST files. The feeds are stored within your primary Outlook data file. A high volume of feed items can bloat this file, slowing down general navigation and search.
Prerequisites for Managing Feeds
You need an active Outlook profile with at least one RSS feed already configured. The steps apply to Outlook as part of Microsoft 365 and Outlook 2021, 2019, or 2016. You must have permission to change account settings.
Steps to Review and Remove RSS Feeds
The most direct way to limit feeds is to delete the ones you do not use. This reduces the number of folders Outlook must load.
- Open Account Settings
In Outlook, go to File > Account Settings > Account Settings. Select the RSS Feeds tab in the dialog box that appears. - Select Feeds to Remove
The list shows every RSS feed subscription. Click on a feed name to highlight it, then click the Remove button. Confirm the deletion when prompted. - Close and Restart Outlook
Click Close on the Account Settings window. Fully exit Outlook and then restart it. Outlook will no longer initialize the deleted feeds.
Change Synchronization Settings for Remaining Feeds
For feeds you want to keep, you can limit their data footprint. This reduces the amount of information Outlook handles.
- Open Feed Properties
In your folder list, right-click on an RSS feed folder. Select Properties from the context menu. - Adjust Download Limits
In the Properties window, go to the Synchronization tab. Check the box for “Download the maximum number of items.” Change the number from the default, often 200, to a lower value like 50 or 25. - Apply the Changes
Click Apply, then OK. This setting limits how many historical items are kept in the folder, reducing folder size.
Modify Send/Receive Group Behavior
You can stop feeds from updating automatically at startup. This prevents network checks that can cause delays.
- Access Send/Receive Settings
Go to File > Options > Advanced. In the Send and Receive section, click the Send/Receive button. - Edit the All Accounts Group
In the Send/Receive Groups window, ensure “All Accounts” is selected. Click Edit. In the list of accounts, uncheck the box next to each RSS Feed entry. - Save the Configuration
Click OK, then Close. Click OK again to exit Outlook Options. Now, your RSS feeds will not sync during the standard Send/Receive action at startup.
Common Mistakes When Managing RSS Feeds
Deleting the Feed Folder Without Unsubscribing
If you only delete the folder from your mailbox view, the subscription remains in Account Settings. Outlook will recreate the folder on its next sync. Always remove the feed via File > Account Settings > RSS Feeds to fully delete the subscription.
Setting the Download Limit Too Low
Setting the maximum download limit to 1 or 0 can cause errors. Some feeds may not display any content. A limit between 10 and 50 is typically sufficient for performance without breaking functionality.
Forgetting to Update All Feeds
Improving startup speed requires applying changes to most or all feeds. Changing settings for just one feed out of twenty will not yield a noticeable performance gain. Review all feeds in the Account Settings list.
RSS Feed Management Methods Comparison
| Item | Delete Unused Feeds | Reduce Download Limit | Disable Auto-Sync |
|---|---|---|---|
| Primary Effect | Permanently removes folder and subscription | Limits historical data stored locally | Prevents network checks at startup |
| Impact on Startup Speed | High – reduces folder count Outlook loads | Medium – reduces data per folder | Medium – removes a sync task |
| Data Retention | All feed items are deleted | Only newest items are kept | All existing items remain |
| Best For | Feeds you no longer read | Active feeds with long histories | Feeds you update manually |
You can now review your RSS subscriptions and remove unnecessary ones. Changing synchronization limits for active feeds will also help. For further optimization, consider archiving old items from large feed folders using the AutoArchive feature in Outlook.