More importantly, the reason you cannot perform a search in your emails is because of the Cached Exchange Mode.

This is because it requires a larger disk space when compared to the Online Mode. As great as it sounds, the Cached Exchange Mode may need to be disabled if you are to gain access to your sent folder. The Cached Exchange Mode enables you to access emails and make changes even when you are not online since they are locally saved on your hard drive as OST files. The Cached Exchange Mode is one of two modes through which you can connect Outlook to your Exchange account, the other being Online Mode. Ensure you check the checkbox near 'Save copies of messages in the Sent Items Folder' Step 3. Go down to the section marked 'Save messages'. To enable this checkbox, follow the steps below: This means that you have to enable the option to always save a copy of any message you send, in the folder for sent items. The first tip is to ensure that you tick the 'checkbox' for saved copies of 'Sent Items' folder messages. So you open your Outlook and your sent folder is missing! What do you do? First, you need to calm down, then try the tips discussed below and you can be certain that one of them will successfully fix the problem at hand. 05 Tip 5: Select Alternative Folder for Sent Emails What to Do When Outlook Sent Folder Gets Missing

Where is outlook outbox folder