Mail App will not open, OR quit.
My Mail app will not open, and now when I need to update my mac, it won't because it says the mail app "cancelled restart". Mail app will not open nor close. When I click on "Mail" at the top bar, the "quit" option is in light grey (not clickable). HELP Mail is still accessable on my phone. Is there a way to delte the app all together (with out having to take it in) and re download.
MacBook Air, OS X Mavericks (10.9.3)