I set up my email into the iPad 'Mail' app, and I cannot find how you log out to prevent another user from opening and reading my mail.
Is it possible to log out of 'mail' on the iPad?
Ask Different is a question and answer site for power users of Apple hardware and software. It only takes a minute to sign up.Sign up to join this community
As far as I know, this is not possible. iPad is not made to be a multi-user device. I am in a similar situation myself as I share the iPad with my wife but haven't yet fixed it. Some alternatives:
You can turn a mail account on/off as explained by RipperDoc (Settings -> Mail,Contacts,Calendars).
On the iPhone, you can also turn off the ability to change the Mail settings; which requires a passcode. Settings -> General -> Restrictions -> Allow Changes (Accounts)
It's a bit of a hassle; but, by turning off the mail account, and then disallowing changes to the account settings, you can prevent the mail from being accessed.