Change sender email address in Mail
Hi
I want to add a sender email address in Mail, and I'm familiar with the solution to add email addresses in the email address field to the right in the accounts tab. But I'm using an iCloud mail and this field is greyed out, so it doesn't allows any edits.
Any help much appreciated!
Mac Pro, OS X Yosemite (10.10.2), 12 core, 48 Gb. ram