To learn how to change the default view in the Tasks pane of 123-mail webmail, please follow these simple steps:
First, login to the 123-mail webmail application.
Then click on the Configuration icon in the main toolbar.
Now click on the Tasks folder in the left hand pane.
And then click on the sub folder Preferences.
Click on the Default view drop down box.
Choose from either H-split view or List view.
Click on the Save icon to save the changes.