Body Default Font Size

I would like to change the Default Font Size of the body of a new email. When you first open a new message, when you go type the default font is 10 I would like to increase the default font size so I don’t have to change it every time. Is there a way to change the default setting?

Subject: Body Default Font Size

In 8.5.2 when composing an email, select text, change it to the size and font you want to use as your default, then click on Text in the toolbar and select Set as Mail Font.