Sign in to your Yahoo Mail account
Open the inbox or folder containing the emails you want to delete
Click the checkbox at the top to select all visible emails
If prompted, choose to select all conversations in the folder
Click the Delete icon
Repeat the process for other pages or folders as needed
Empty the Trash folder to permanently remove the emails
Use search filters to find specific emails before deleting them
Select multiple emails by holding Shift and clicking a range
Select individual emails by checking each box before deleting
On mobile, tap and hold an email, then select more emails and tap Delete