Try this:
1. Go to your Inbox.
2. Click on the New button in the upper left to start a new email.
3. Click on the Format Text tab at the top of your screen.
4. You’ll see the buttons are grayed out. Click in the big white box where
you’d write the body of your email to activate them.
5. Click on the dialog box in the Paragraph group. The dialog box is located
in the lower right-hand corner of the group, and looks like a tiny arrow
inside a square.
6. In the section under “Spacing,†change both “Before†and “After†to zero.
7. Change the Line Spacing to Single.
8. Click the Default button at the bottom of the box.
9. Click OK in the box that pops up.
10. Click OK to get out of the Paragraph dialog box.
Hope that helps!
Kara