Change the size or formatting of text

Applies To
Outlook for Microsoft 365 Outlook 2024 Outlook 2021 Outlook 2019 Outlook 2016 New Outlook for Windows

In Outlook, you can apply a format to selected text. You can also apply a theme to format the whole message to give it a professional and modern look. A theme is a set of formatting choices that can include a color scheme (a set of colors), a font scheme (a set of heading and body text fonts), and an effects scheme (a set of lines and fill effects).

Change the text size

Select the text that you want to change, and then on the ribbon, do one of the following:

  • Specify a font size on the Message tab in the Basic Text group.
  • Specify a font size on the Format Text tab in the Font group.

Apply or remove single-line strikethrough formatting

  1. Create a new message or open a reply or forward.
  2. Select the text that you want to format.
  3. Go to Format Text and select Strikethrough (the S icon with a line through it) in the Font group. Screenshot of single-line strikethrough option in new Outlook.

Note

New Outlook currently supports single-line strikethrough only.

Change the message format to HTML, Rich Text Format, or plain text in Outlook