Use this Procedure given below & Pass the parameter
your comments are welcome (sabari@writme.com)

Example :

OpenEmailClient('sabari@writeme.com','','My First E-Mail','Just a Test')


PROCEDURE OpenEmailClient
LPARAMETERS lcEmailAddress, lcCCAddress, lcSubject, lcMessageBody
DECLARE INTEGER ShellExecute ;
IN SHELL32.DLL ;
INTEGER nWinHandle,;
STRING cOperation,;
STRING cFileName,;
STRING cParameters,;
STRING cDirectory,;
INTEGER nShowWindow

ShellExecute(0, "", "mailto:" + lcEmailAddress + "?Subject=" + lcSubject + ;
"&CC=" + lcCCAddress + "&body=" + lcMessageBody, "", "", 1)

RELEASE DLLS ShellExecute
RETURN