Find all messages with attachments
Instant Search can help you quickly locate all messages that contain a file attachment.
In the Navigation Pane, click Inbox or the folder that you want to search.
At the top of the message list, click in the Instant Search box.
Keyboard shortcut To jump to the Instant Search box, press CTRL+E.
On the Search tab, in the Refine group, click Has Attachments.
By default, the selected mail folder is searched and results appear in the message list. If no results are found, you can expand the search to all mail folders, by clicking Try Again in All Mail Items in the message list area.
If search results appear, but the item you are seeking doesn’t appear and you think it might be located in a different mail folder, click Try searching again in All Mail Items in the message list area.
Clear Instant Search results
When you click a different folder in the Navigation Pane, the message list returns to the default view with all items appearing.
You can also use the Close Search command on the ribbon.
On the Search tab, in the Close group, click Close Search.