Hello, I am offering a service which appeals to a very niche number of users (Student Undergraduates aged between 18-24). Now I believe the best method of reaching out to my target audience (which are apart of Facebook groups i.e. Oxford University students 2016), would be to message those who have joined their respective university's Facebook group page as well as for example course groups (I.e. Business Management student groups). Is it at all possible to gain the email addresses for all those who have joined a particular Facebook group, and therefore I have the ability to email them with our service we offer to them. In essence, I require the ability to reach out to these people who are apart of particular and specific groups...what is the most efficient way of reaching these users? I thank you very much in advance and appreciate all replies. If there are any other suggestions please let me know also.