Receiving encrypted mails on iPhone

Have just installed the certificate in Outlook and can now send/receive encrypted files ok. However, I have my iPhone set up to also access my mail (Google Apps) so I can read it when on the move. But I can’t (obviously) read the encrypted mails as I have no decryption installed on the iPhone. Are you aware of any solution to this?

There is an application for reading smime encrypted mails on iphone: SMIMEreader, it is free. There is another that can also send messages, I think the name is SecureMail