How do I change the font size permanently for my email messages?

Dear @John Smit, 

Welcome to the Q&A Community.    

Thank you for reaching out to us with your question about adjusting font size in Outlook. I understand how important it is to have a comfortable reading and composing experience. 

By default, Outlook uses Aptos 12 pt for composing and replying to messages. To permanently increase the font size: 

Open Outlook and go to File > Options > Mail > Stationery and Fonts. 

Under the Personal Stationery tab, click Font… for each section (New mail, Reply/forward, Plain Text). 

Choose your preferred font style and size (for example: 14 pt), then click OK to save your changes. 

These settings will apply to all future emails you compose or reply to. 

If you’d also like larger text when reading emails, you can use the Zoom option in the Reading Pane and select your preferred zoom level. Be sure to check Remember my preference so it stays consistent across messages.  

To enlarge text in your message list (such as sender and subject lines in your Inbox): 

Go to View > View Settings > Other Settings. 

Use Row Font (and Column Font if needed) to select a larger size for the list. 

Finally, if your messages still appear small when replying, make sure your default compose format is set to HTML: Go to File > Options > Mail > Compose messages in this format and select HTML. 

Additional information is available in the following resources: 

Change the default font or text color for email messages in Outlook - Microsoft Support 

Change the font or font size in the message list - Microsoft Support 

Set the font or text color for messages you send - Microsoft Support 

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I hope this information is helpful. Please follow these steps and let me know if it works for you. If not, we can work together to resolve this.    

Thank you for your patience and understanding. If you have any questions or need further assistance, please feel free to share them in the comments on this post so I can continue to support you. 

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