Changing font size in Outlook emails in the To and Subject fields

Hi,

I assume you are talking about Outlook 365. I wish I had a better answer, but Outlook 365 does not provide a direct or built-in setting to change the font size exclusively for the "To," "Cc," "Bcc," or "Subject" fields while composing an email.

The best way is the following:

• Right-click your Windows desktop and select Display settings.
• Under Scale and layout, increase the percentage (for example, change it from 100% to 125% or 150%

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I hope this information helps. If you have any more questions, don't hesitate to reach out. Wishing you good luck!