How to Use Email Flags
One way to organize your Mail messages is to use Mail’s flags. When you mark messages about certain subjects with a colored flag, it’s easy to keep track of them. Apple Mail has seven email flag colors: red, orange, yellow, green, blue, purple, and gray. You may want to flag urgent emails with a red flag, family messages with a blue flag, or work messages with a green flag. Once you flag a message, Apple Mail adds the flag to the mail header, and it appears in a mailbox of the matching color under Flagged in the sidebar. Here’s how to flag a message.
Renaming Message Flags
You may find it more helpful to name your flags instead of using the default colors. Rename Red to Urgent, for example, or rename blue as Personal. You can even rename a color to Done to indicate that you’ve already taken care of an email. Here’s how to assign names to a colored flag:
