Tasks List Dashboard provides you an access to your tasks list from Gmail's Inbox view. You can delete, edit, and send an email to the task's related entry (Lead, Contact, or Account) in just one click.
Here's how to Enable/Disable Tasks List Dashboard:
1. On the top right menu bar of Gmail, click the Collabspot icon (Collabspot Menu), then select "Settings" on the dropdown list.
2. On the Settings popup, under General tab, look for the "Show task list in the inbox" option and select your preference.
3. After making changes, hit the Save Settings button.