With the release of the Messages beta app, I discovered that, in order to have complete synchronization of your messages across your devices, you need to be sending from a specified e-mail address. My Apple ID is tied to an e-mail address that I'd really prefer to keep private. However, I do have an @me alias that I'd prefer to use, but whenever I try to set it up, an error message instantly pops up. I also tried to add it to the list of associated e-mails on the Apple ID page, but it refuses to save. Has anyone had any luck configuring this to work or are aliases not possible to use for iMessage? Thanks!