Sign in to your Yahoo Mail account
Open the folder containing the emails you want to delete
Click the checkbox at the top to select all visible emails
If needed, click the option to select all emails in the folder
Click the Delete icon
Repeat the process for other folders if needed
Empty the Trash folder to permanently remove the emails
Use the search bar to find specific emails before deleting them in bulk
Select multiple emails by checking their boxes and delete them together
On mobile, open Yahoo Mail, long-press an email, select more emails, then tap Delete
Review selected emails before confirming deletion