Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi Petercassar T,
Thank you for reaching out to us. I am Blessing, an independent advisor here and a Microsoft user like you.
You can set default font and font size on Outlook by following the steps below for guidance:
- Go to File > Options > Mail > Stationery and Fonts...
2.Select the font you want to change
- New mail messages
- Replying or forwarding messages
- Composing and reading plain text messages
- Select the options that you want to apply to the default font, such as font style and font size.
- Select OK all the way back out to save your changes.
Source for more information: https://support.microsoft.com/office/20f72414-2c42-4b53-9654-d07a92b9294a
Hope this helps!