Mail won't open on my MacBook Pro
My Mac has 98 GB free of 249 GB
I have a MacBook Pro from late 2013 with a 2 GHz Intel Core i7 processor.
It has OS X El Capitan version 10.11.6
My mail icon won't open nor does it open up on the tool bar. It won't open in Applications either. I had a draft email earlier today using stationary. I tried to delete the draft and it seems that is when the problem started. I ran the disk utility and I shut everything down more than once. Please help.
MacBook Pro (Retina, 15-inch, Late 2013), OS X El Capitan (10.11.6)