I'm using Mavericks DP2. The mail app only syncs the mail in the Gmail inbox after 6/24/2013, while there are a couple thousands mails that day. Is there anyone having the same issue?
Mine doesn't sync right either, and I've been having issues with signatures too-- only forgets my Gmail signature every couple of days, but tbh that happens on my Air that is running Mt Lion still so it must be a Gmail thing...