After more than 15 years covering everything Apple, it’s with a heavy heart we announce that we will no longer be publishing new content on iMore and the iMore forums will be closing as of November 1st, 2024.
Unless they are already in the Trash folder, there is no way to delete mail in mass from your Inbox. In your Inbox you will need to mark each one individually, and after you have marked them, then you can delete all you have marked. Only in the Trash folder can you hit Delete All.