How do I increase the MS Office 365 Outlook font size permanently?

Answer 1

Change the Default Font Size in the Mail Editor of Microsoft Outlook

1.      Click on File tab

2.      Click on Options in the Backstage view

3.      Click on Mail

4.      Click on the Stationery & Fonts button

5.      Under New Mail Messages, click on the Font… button

(Note: You can complete below actions for Replies and Forwards as well)

6.      Select the desired Font size e.g. 11, 12, 26, etc.

7.      Click OK

8.      Click OK

9.      Click OK