Mail (Yosemite): Move or copy messages
Move messages: Drag one or more messages to a mailbox in the Favorites bar or the Mail sidebar. Or Control-click a message, choose Move To, then choose a mailbox.
Copy messages: Hold down the Option key when you drag messages to another mailbox. Or Control-click a message, choose Copy To, then choose a mailbox.
If you have an IMAP account and were unable to move messages, it’s possible the messages contain invalid characters (typically added by a mail server) or are too large, or you exceeded the storage limits set by your account provider.
You can use rules to automatically move certain incoming messages to specific mailboxes.
Last Modified: Feb 3, 2015