Software & Apps MS Office How to Increase the Font Size While Reading Mail in Outlook Don't let reading your Outlook email give you a headache by Heinz Tschabitscher Writer A former freelance contributor who has reviewed hundreds of email programs and services since 1997. our editorial process Heinz Tschabitscher Updated on January 31, 2020 MS Office Outlook Word Excel Powerpoint Tweet Share Email As monitors get larger, the resolution increases; this keeps images crisp and sharp. Unfortunately, this increase in resolution results in smaller text on the screen. This may make it difficult to read the text in emails using the default font sizes. When the text is too small, increase the font size in Outlook. Instructions in this article apply to Outlook 2019, Outlook 2016, Outlook 2013, Outlook 2010, and Outlook for Microsoft 365. Increase the Font Size While Reading Mail in Outlook To read mail in a larger font in Outlook: Double-click the message to open it in a separate window. Go to the Message tab. Select Zoom. Select the Percent up arrow to make text larger or select the Percent down arrow to make the text smaller. Select OK. When reading messages in the Reading pane, zoom in on an email with the zoom slider. Or, press Ctrl while turning the mouse wheel over the message text area to increase the font size. What to Do When Increasing the Font Size in Outlook Doesn't Work Unfortunately, some emails specify the font in a way that cannot be changed. If you receive emails with fixed-size fonts, use a display lens such as the built-in Magnifier in Windows or the free Virtual Magnifying Glass application. You can also change the size and style of the message list in Outlook.