Type the letter "e" into your email search box. Select inbox as your dropdown option. This will be on the left side of the search box. To select all the boxes, click the empty checkbox. Click the delete button and then confirm. How to Delete all Yahoo Emails on iPhone.

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Mar 12,  · My Yahoo why is my inbox empty on yahoo mail account is empty. My folders and emails are gone - Answered by a verified Email technician We use cookies to give you the best possible experience on our nda.or.ugted Reading Time: 5 mins. Sep 21,  · I went to Yahoo mail on the web via my browser and the Inbox there is empty as well. I set my password back to the original password for the email account and again was able to send and receive an email test message but, apart from the test messages, my Inbox is still empty. All my folders, e.g. sent mail, have all the emails they should.