How to Set Default Font Size to 11 in the Outlook

1. Open Outlook Settings

1. Launch the Outlook application on your desktop or web.
2. In the upper-right corner, click on the settings (gear icon).

• Navigate to Mail on the left-hand side.
• Select Compose and reply from the options.

2. Customize the Default Font Settings

1. Under the Message format section:

• Locate the Default font options
• Set the Font size to 11.
• click the Save button at the bottom of the page.
• Close and reopen outlook, compose a new email to confirm the default font size is applied.