The most efficient way to delete thousands of Yahoo emails is to use the built-in Android system backup and restore function.To do this, go into your device settings and click on Backup & reset > Factory Data Reset. This will remove all of the data on your phone, including any email accounts you have set up.

To delete all the emails on Yahoo app, you can go to your inbox and select “delete” from the menu.

The easiest way to delete emails on Android is to use the “Select All” feature. To do this, tap and hold your finger on an email until you see a checkmark appear next to it. Once you have selected all of the emails you want to delete, tap the trashcan icon at the top of your screen.

There are a few ways to delete Yahoo emails. One way is to go to the Yahoo search engine and type in “delete” or “deleting.” You will be taken to a page that has links for deleting emails. Another way is to go into your inbox and click on the email you want to delete. A third way is by going into your settings and clicking on the delete button next to the emails you want deleted.

This is a difficult question. If you’re using Gmail, then you can use the “Select All” button and then delete all of them at once. If you’re using Outlook, then you can use the “Shift” key and the “Delete” key to select all of the emails and then press “Delete.

You can delete emails in Yahoo by using the “Delete” button. You can also use the Archive, Mark as Read, or Flag buttons to manage your emails.

Yahoo! Mail has a limit of 50 emails to delete at one time. You can delete more than 50 emails by deleting them individually.

Yahoo only allows you to delete emails by date, so if you want to delete emails from a specific year, you will need to go through and manually delete them one by one.

Yahoo’s email service has a “mark all as read” button on the top of the page.

To delete your entire inbox, you’ll need to go to the settings menu. Once there, scroll down until you find the “Inbox” section and click on it. After that, click on “Delete All Messages”.