E-mail will not let me select multiple e-mails without loading each one seperatly

I am in the web interface trying to clean up my mailbox. I normally use outlook for this but that seems to not be updating the web server. I'm trying to find a way to select more than one e-mail on the site but there are no check boxes and no select all options that I can find. Do I really have to open each email individually and delete it? 

Thank you, 

Jim