First email of folder automatically opening

     I have my eM client layout set to “messages on the right.” When I click on any folder such as inbox or drafts, it automatically opens the first email in that folder. How can I prevent this from happening? I want to go to my inbox and see my emails without it opening the first email on the right side of the screen, but I don’t want to change my layout. Please let me know if there is a way to do this.