Mailbox window font settings
In [Options/Prefs window] > Extras ...
Eudora OSE allows users to customize the mailbox window display font (i.e. the font used in the mailbox table of contents).
The Mailbox window font control provides a drop down list of fonts installed on the computer, and an additional separate drop down allows the independent adjustment of the size.
If no selection has been made (i.e. the box is empty), the mailbox font selection and size will be the system default.