Last week Google introduced the Google Email Uploader for Mac . It’s an app that lets you upload email from various clients (Mail.app, thunderbird, outlook, eudora, etc) to Google Apps.
After toying around with the software it warned me it doesn’t support (free) Gmail-accounts.
I was really disappointed until I remembered Gmail supports IMAP. After creating an account for Gmail in Mail.app I was able to drag any message to the Gmail mailbox.
It looks like the Google Email Uploader for Mac offers no more options than a classic IMAP mail client.