For plain text emails at least, Yahoo! Mail and Yahoo! Mail Classic can make the display bigger by default and allow for easier reading.
Make Yahoo! Mail Display Messages in a Larger Font
To read plain text emails in a larger font in Yahoo! Mail (rich-text messages may define their own fonts and font sizes):
- Select Options | Mail Options from the top Yahoo! Mail navigation bar.
- Go to the General category.
- Set the desired font size (and, optionally, font) under Plain text font:.
- Do take a look at the Sample Text. Some fonts appear smaller at a given size than others.
- Click Save Changes.
- Now click Back to Mail.
Make Yahoo! Mail Classic Display Messages in a Larger Font
To make Yahoo! Mail show plain text messages (HTML messages may define their own fonts and font sizes) in a larger font:
- Select Options in Yahoo! Mail.
- Go to the General Preferences category.
- Make sure Larger is selected under Font Size:.
- Click Save.
