Hi Takayuki,
Thank you but believe me when I say I have read through all of your documentation and applied several options and tested again and again.
I am now following this tutorial of yours:
http://contactform7.com/selectable-recipient-with-pipes/
Here is my sample again:
[checkbox i-am-interested-in class:i_am_interested_in use_label_element your-recipient "Undergraduate studies|james1@gmail.com" "Postgraduate studies|james2@gmail.com" "Careers|james3@gmail.com" "Research|james4@gmail.com" "General|james5@gmail.com"]
And this is in my TO: field
[your-recipient]
I do appreciate your help.