This will allow you to not only send files through Dropbox while you are in your Yahoo account, but also receive them directly to Dropbox. With the new “save to Dropbox” button, it couldn’t be any easier for Yahoo email users. At the same time, Dropbox has acquired an email app “Mailbox” with integration that might make it even easier for those still utilizing email. Original source – Yahoo, Dropbox Partner for Easier Email Attachments [Right Startups]
