Want email address of technical/Engineering/Science students in US, UK, etc

I want email id of all the students related to studying Science/Engineering/Maths. These students should be from all the developed country. Their personal emails (non academic email) would be appreciated. Country to be included is all the developed countries particularly US, UK, France, Germany, Japan, China, Italy, Russia, Canada, Spain, Austria etc. Email id of person doing their Post doc, Phd and Masters is required however student in their final pr pre final year of their Bachelors is required.