1)   SplitEmail 13
SplitEmail is an email plug-in which allows sender to mark sections of an email private and confidential for specific recipients. You can also highlight parts of a message for a particular recipient while leaving it un-highlighted for everyone else.
SplitEmail, Email 2.0, Gmail, Outlook Addon, Outlook Plugin, IE Addon, Yahoo Mail Addin, AOL Plugin, Secure Email, Email Personalization,