OS X Tip – Customise Fields In Mail
If you are anything like me, when you compose an email using Mail on your Mac, the only fields you will regularly use are those for the address and subject.
I for one, hardly ever use the Cc and Bcc fields and have chosen to disable them. With Apple mail you can change which fields appear by clicking on Customize, which is located in the bottom left of the toolbar when you are in compose mail mode.
From the Customize menu that appears, you can enable or disable fields, add a drop down menu for choosing which of your accounts to send from, add a menu for signature options and one for priority mail.