There is a simpler alternative for using Script Task for emailing - just use Execute SQL Task with the following code

EXEC msdb.dbo.sp_send_dbmail @recipients='name1@example.com;name2@example.com',

@subject = @Subj,

@body = @Message,

@body_format = 'HTML' ;

Sure - Database Mail must be enabled and configured in advance for instance which used for sp_send_dbmail call

Regards