It is possible to send files by email from within the hopTo app. Please note that in order for this functionality to work you need to have an e-mail account set up on the iPad. Follow these steps in order to send a file by email:
Log in to the hopTo app
Navigate to find the file you wish to email.
tap and hold the file you wish to email until the orbit menu pops up. From the menu choose the @ (Email) option.
Now you will have the option to compose the e-mail with the document of your choice attached. Add the recipients, subject and the message to your email as necessary and the document is ready to be sent.