Outlook Search in specific folders

You can use the "folder:" sytanx to search within specific folders:

folder: [folder name] [search criteria]
or
folder: [folder name] from: [name]

• Either press Ctrl+Shift+F or click the Find button.
• Open the Options menu on the Find pane.
• Select Advanced Find
• In the Look For drop-down menu, choose where you want to search.

If the folder that you want to search doesn't appear on the menu, click the Browse button and choose that folder in the Select Folder(s) dialog box, e.g. "Inbox", "Archive"

• Choose options on the three tabs — Contacts, More Choices, and Advanced — in the dialog box.
• Don't forget to click the Find Now button :)

P.S.: The Advanced Find dialog box offers handy commands for dealing with items after you find them. Select the items and choose Edit --> Move to Folder to move the items into a new folder. Choose Edit --> Delete to delete the items. Type Ctrl+click or Shift+click, or choose Edit --> Select All, to select all items in the Advanced Find dialog box.