I just setup mail on my rmbp and am having some issues having to do with duplicate emails. It seems that everytime I write an email from the mail app, it duplicates it once a minute and stores it all in the originall email thread on gmail.com. Mail.app doesn't show any of these duplicate emails, the only way I can see them is if I go online through a browser to gmail.com. Mail.app seems to in general just be messing with my email labels and duplicating things. Also it seems that every day the folder in ~/Library/Containers/com.apple.mail/Data/Library/Mail is getting larger even though I don't receive or send new emails everyday. Yesterday it was 547.18mb, today it is 577mb. It grew nearly 30mb in one night when I haven't received or sent anything. Why is this happening and how do I fix it? I would really like to use the mail.app because I like how it gives you notifications in notification center when you receive a new email. This is my first time trying to switch to using mail.app, up until now, I have always checked and managed my gmail account through gmail.com on safari.