Tabs allow you to save incoming E-Mail messages in the Inbox folder separated by sender. The following options are available:
enable or disable tabs
assign incoming E-Mail messages to a category
edit the tabs view
How to assign incoming E-Mail messages in the inbox to categories:
Select the folder in the folder tree.
Select the category
in the categories bar. E-Mail messages that have not been assigned to a category yet, are displayed in the list.If the categories bar is not displayed, enable the categories bar in the E-Mail settings.
Drag an E-Mail from the list to a tab in the categories bar and drop it there.
Depending on the inbox tabs settings, you are asked whether you only want to assign this single message to the category or all existing and future messages from this sender.