You can browse a Tasks Mailbox by clicking its name (link) on the Mailboxes page.
The Tasks browser page displays the Tasks folder data as a scheduling table:
The table uses different colors for high-priority, regular, and completed Tasks. Click a Task to open it.
Click the arrows in the table corner to move the "visible window" to earlier or later days, and to page the task list. Click the (+) and (-) links to display more or fewer elements.
Click the View as Folder link to see the folder data as a regular Mailbox.