The USB port on my momo9 tablet is broken but as I only use it for ebooks I thought that's OK I'll email epub files as attachments and download them. I have Aldiko on the tablet and use it for epub files. I open the email, see the attachment but cannot view or download it. My email is a gmail account. I get the message saying "Sorry no application found to view this attachment". With pdf attachments etc it lets you view and at that time gives you the option to download. If I can't get this to work I'll have to throw the tablet away!!