Noteworthy indeed.
Ever email yourself a reminder that gets lost in your inbox? Mail lets you write handy notes you can access from anywhere. Brainstorm ideas, jot down meeting notes, scribble a phone number — notes can include graphics, colored text, and attachments. Group notes into folders or create Smart Mailboxes that group them for you. Since your notes folder acts like an email mailbox, you can retrieve notes from any Mac or PC using an IMAP mail service like .Mac or AOL.
Much ado about to-dos.
Forget manually adding a new item to your to-do list every time an email hits your inbox. Simply highlight text in an email, then click the To Do button to create a to-do from a message. Include a due date, set an alarm, or assign priorities. Every to-do includes a link to the original email or note, and to-dos automatically appear in iCal, complete with any changes you make. And since to-dos are stored with your email (when using an IMAP mail service), you can access them from Mail on any Mac.