To override the "From" address for OS X Mail, the help says the following:
The trouble is that when I follow these instructions, there is no "From".
What am I doing wrong?
To choose an account for a message youre composing, click the From pop-up menu and choose an email address.
If the From pop-up menu is not displayed, click the Customize pop-up menu in the header area and choose Customize. Select the checkbox next to From and then click OK.
If the From pop-up menu is not displayed, click the Customize pop-up menu in the header area and choose Customize. Select the checkbox next to From and then click OK.
The trouble is that when I follow these instructions, there is no "From".
What am I doing wrong?