I have several IMAP accounts, one of these holds emails with sensitive information that I would like to keep secure.
I don't consider that the Android platform is very secure, particularly if my phone is lost or stolen.
I would prefer that particular accounts are only accessed manually and that the IMAP password must be entered manually for these accounts and not stored on the phone.
I would also prefer that emails from these accounts are not saved in the phone (temporary caching is OK but not saved to the flash file system).