If you choose to manually update your RSS feeds on demand, there is a way to do this without having to send and receive your email at the same time. You can create a special Send/Receive Group for your RSS feeds.
NOTE: If you choose to not have your RSS feeds updated automatically, creating a separate Send/Receive Group for your RSS feeds is useful so you can update them when you want to.
To begin creating a new Send/Receive Group, click the File tab.
Click Options in the menu on the left side of the Account Information screen.
On the Outlook Options dialog box, click Advanced in the left pane list of menu options.
In the right pane, scroll down to the Send and receive section and click the Send/Receive button.
On the Send/Receive Groups dialog box, click New next to the list of groups.
On the Send/Receive Group Name dialog box, enter a name, such as “RSS Feeds On Demand Only,” in the edit box and click OK.
For all the other Accounts, except RSS, in the list on the left, de-select the Include RSS Feeds in this Send/Receive group check box so there is NO check mark in the box. Click RSS under Accounts, and make sure the Include RSS Feeds in this Send/Receive group check box is selected.
NOTE: If you want to have a separate Send/Receive group for each RSS Feed or group certain RSS feeds together, you can turn on and off specific feeds in the lower half of the Send/Receive Settings dialog box. If you decide to do this, you might specify a more appropriate name for each Send/Receive group for the RSS feeds.
Click OK to accept your changes and close the Send/Receive dialog box.
Make sure your new Send/Receive group is selected in the list of groups on the Send/Receive Groups dialog box. De-select all the options under Setting for group section at the bottom of the dialog box and click Close. This prevents this group from being updated when you click the general Send/Receive button to retrieve your email.
Click OK on the Outlook Options dialog box.
To manually update your RSS feeds, click the Send / Receive tab.
Click Send/Receive Groups and select your new group from the drop-down list.
You can change, rename, or remove any Send/Receive Groups you create by accessing the Send/Receive Groups dialog box again.