The 'Deletion Action' option allows you to customize the way you navigate through the messages in your mailbox after deleting any message. This option allows you to either move on to the next message after you have deleted the current email or return to the main mailbox view.
Click the 'Deletion Action' drop-down box to view the options associated with it. The options are listed below:
'After deleting a message, move to mailbox view': Select this option in the 'Mail Preferences' page and click the 'Update Information' button to save the setting.
'After deleting a message, move to the next message': Select this option in the 'Mail Preferences' page and click the 'Update Information' button to save the setting.