Email, Messaging, & Video Calls Email Increasing Font Size in Windows Mail or Outlook 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 June 24, 2019 Chris Thomaidis / Getty Images Email Yahoo! Mail Gmail Tweet Share Email Monitor resolutions increase, but fonts don't. Somehow, it was easier and more comfortable to read emails gray on black in a Courier-like font on a 70-character-wide terminal. Fortunately, modern displays and operating systems provide you with options. While the default may not be perfect for your eyes, it's easy to change the display font in Windows Mail or Outlook Express to something bigger, thus better. Read Mail in an Increased Font Size To read a message in a larger font in Windows Mail or Outlook Express: Select View > Text Size from the menu.Choose your preferred font size. An Even Faster Way to Larger Fonts As a swift alternative, move the mouse cursor over an open message or the preview pane, hold down the Ctrl key and scroll down with the mouse wheel. To decrease the font size, scroll up. With a little more tweaking, you can also print your emails in a larger font in Windows Mail and Outlook Express. Read All Mail in a Larger Font in Outlook Express To have Outlook Express display all messages in plain text and a reasonably large font: Make sure Outlook Express is set up to use only plain text.Select Tools > Options… from the menu in Outlook Express.Go to the Read tab.Click Fonts… under Fonts.Make sure Largest (or, of course, a different size) is selected under Font size:.Click OK.Now, click OK again.