Part 1, Step 1: Open Outlook 2013 and select Manage Rules & Alerts from the Home tab.
Part 1, Step 2: Click the New Rule button to create a new rule.
Part 1, Step 3: Select “Apply rule on messages I send”, then click Next.
Part 1, Step 4: Check the box next to “through the specified account”, then click on the word “specified”at the bottom of this window to select your account.
Part 1, Step 5: Make sure the correct account is selected in the drop-down menu, then click OK.
Part 1, Step 6: Click Next to proceed to the next screen.
Part 1, Step 7: Check the box next to “move a copy to the specified folder”, then click on the word “specified”at the bottom of this window to select a folder.
Part 1, Step 8: Select the desired sent folder in your offline email archive, then click OK.
Part 1, Step 9: Click Next, then click Next again to skip the “Are there any exceptions?” screen.
Part 1, Step 10: Name your new sent message archive rule, then click Finish.
Part 1, Step 11: Click Apply to enable the new rule, then click OK to close the Rules & Alerts window.
OPTIONAL STEPS (SEE POST INTRO)» Part 2, Step 1: Select the File menu and choose Options.
Part 2, Step 2: From the Mail tab, locate the heading titled Save Messages. Uncheck the box next to “Save copies of messages in the Sent Items folder”, then click OK.