Is there a way to share multiple pictures at the same time through Dropbox? Currently, I am doing it by long pressing on each photo and going to share. I'd like a way to add checkmarks to multiple images and just share them once by typing in an email address once. I click on the second icon at the top where it shows me all of my photos in a matrix view, though when I press or long press a photo it still does not apply checkmarks. Thanks.