MumSMS+ for S60 5th Edition

[wraggster]

MumSMS+ by Huang Hai is a smart and powerful software which offers you an easy way to protect your private and confidential messages in your mobile phone. All your sensitive SMS/MMS including sent, received and draft messages can be hidden automatically by choosing a proper profile. All your hidden messages are kept in good order and can be read only with right password.

http://my-symbian.com/s60v3/software/applications.php?name=MumSMS+_for_S60_5th_Edition&fldAuto=771&faq=15