We are aware of issues some users are having with logging into Yahoo accounts and are working to fix this as quickly as possible.

Change the default font in Yahoo Mail

Show off your style by changing the default font type and size in Yahoo Mail. When scrolling through the font options, you'll see a message preview to the right to show you what the font will look like.

  1. Click on the Settings icon Image of the Settings icon. | click on More Settings Image of the More icon..
  2. Click on Writing email.
  3. Under "Default rich-text font" select your preferred font style and size.