Software & Apps MS Office How to Search for Emails With Empty Subject Lines in Outlook Find all those emails with no subject lines By Heinz Tschabitscher Writer A former freelance contributor who has reviewed hundreds of email programs and services since 1997. our editorial process Heinz Tschabitscher Updated February 03, 2020 MS Office Outlook Word Excel Powerpoint Tweet Share Email Email messages that don't have a subject are not easy to find in the Outlook message list. Instead, use the search function to locate these emails. Then, select emails with no subject to rename them with a descriptive subject. Instructions in this article apply to Outlook 2019, 2016, 2013, 2010; and Outlook for Office 365. Search for Emails with Empty Subject Lines in Outlook To find emails with empty Subject fields in Outlook: Press Ctrl+E to go to the Search tab. In the Options group, select Search Tools. Or, press Ctrl+Shift+F. Select Advanced Find. Select Browse. Choose which folders you want to search and select OK. Optionally, select the Search subfolders check box for a more thorough search. Select the Advanced tab. In the Define more criteria section, select the Field dropdown arrow and choose Frequently-used fields > Subject. Select the Condition dropdown arrow and choose is empty. Select Add to List. Select Find Now. Messages with empty Subject fields are listed at the bottom of the dialog box.