Having my outlook 2010 view emails that I send from k9 on my phone

[phys431]

So I have a new phone and I installed k9 so I can start sending encrypted emails. Ideally I want to send emails to an end-user that are encrypted and I would experiment by sending an email from my phone to myself and viewing on my laptop (which has Outlook 2010).

I want to be able to send an encrypted email to someone where both they and I are very IT-illiterate, so any directions/actions that the end-user needs to do has to be simple. When I send the email to myself, outlook sees two attachments, a DAT file (Untitled attachment 00305.dat) and an ASC file (encrypted.asc).  Outlook was unable to read my message, which was just a short, "hello", but at any rate I don't know what to do to get Outlook to be able to read the email, or if the user/Outlook needs to do something with either of those attachments.

Thanks,

Adam