Using a Mac laptop, when I copy formatted text from Mac Mail into a CiviMail newsletter I'm composing using Firefox, it does what I need. But doing the same using a Mac desktop, the pasted text is plain text, which is what I don't want. I've compared preference settings for Mac Mail and for Firefox on the laptop and desktop and they appear to be the same. But it can't be Civi settings as I'm composing the same newsletter, using the same server on both machines. So I'd be grateful for a solution.