No, Oxfam does not send out random, untargeted emails (spam). We will only send you requests to participate in surveys and on occasion, other types of research. In the future, we also hope to send updates on the impact that the research you have taken part in has had. We will not send you any other information or requests.
If you do wish to receive regular updates on Oxfam's general work please sign up here: http://www.oxfam.org.uk/get_involved/email/imin.html