So in Apple Mail you can compose messages and “Notes.” A note is like a message that stays in your mailbox. A message to yourself, in a way. Did you know that you can also call out lines in Notes as To Do items? Just choose File, New Note. Then after you write down some things, select a line and press the To Do button at the top of that window. The line will not only get a checkbox next to it, but it will also be added to your To Do list that you can access in Mail and in iCal.
Related: Loss Of Mail Drafts & Other Quirkiness, Archiving Mailboxes, Just got a error from Apple Mail, Remove Mail Attachments, MobileMe – Notes Syncing to MacBook Pro Mail Inbox.
