This feature is available only if you are using the single-line layout view type (view type: The basic structure of a view. When you create a view, you must first select one of five view types (table, timeline, day/week/month, card, or icon) to determine how information will be arranged and formatted in your new view.). In multi-line layout view type, Microsoft Outlook automatically resizes the column headings (column heading: The horizontal bar at the top of one column in a table. There are multiple column headings in the column heading row.) as you change the width of the message list.
What are single-line and multi-line layouts?
- Right-click the column heading, and then click Format Columns on the shortcut menu (shortcut menu: A menu that shows a list of commands relevant to a particular item. To display a shortcut menu, right-click an item or press SHIFT+F10.).
- Under Width, do one of the following:
- Select Specific width, and then enter a number in the characters box.
- Select Best fit to have Outlook automatically resize the column to the best size.