Mail.app in Mavericks wants to download ALL email, making it useless for people with large amounts of email
I was running Mountain Lion, and in Mail.app I had "Keep copies of messages for offline viewing" set to "Don't keep copies of any messages". It was working fine.
Today when I upgraded to Mavericks, it said "To use the new features in Mail, your Mail messages need to be downloaded to this computer. Click Continue to download your messages now, or click Quit to download later." You'll notice it didn't give me an option to say no, don't download the messages; the only other option was Quit.
I have too much mail for this to be possible. Many hundreds of thousands of emails across dozens of folders. I let it start trying to download them all anyway, but it got bogged down at about the halfway mark (as I expected it would). I quite simply have too much mail for all of it to be downloaded.
I want the old Mountain Lion behavior where it only downloads the headers, not the messages themselves (unless I click on a message). But when I look in the preferences for the Mavericks version, that option is no longer there in the available preferences.
This is a showstopper. This is probably going to mean that I'm going to have to downgrade back to Mountain Lion.
:-(