BenkoDesk lets you use Trello for shared/team emails. Connect up a Gmail account to a Trello account and you and your team can easily send and receive emails directly from Trello cards. Replaces things like HelpScout for 1/10 the cost!
Add your files by clicking on the + icon, add the email address you want to send it to, add your email address, add a message (optional) and you are ready to go by hitting the send button; the person to whom you sent the files will receive an email with the link to view and download all the files.