Samsung Galaxy S4 Mini - Email Notification - How do I prevent full email from displaying?

[ElenaDroid]

Hi guys,

On my Samsung Galaxy W, the email notification was just an envelope and when I pulled the notification tab down it just said "new messages" but on the S4 mini I just got, when a new message arrives, the envelope icon is there but the entire message displays in the notification area when I pull the tab down!

Not particularly secure...

Any ideas on how to change the setting so that there is no preview of the message?

Thanks