How can l get the email contacts for all Mobile phone companies? l have advertising proposals for them?

The service,provide in the mobile phone industries eg mtn ,Vmobile,Globacom,Vodafone,Vodacom,Celte... etc-Ihave a selling marketing/Advertiing proposal fpr them.The proposals targets the Xmass and New year Shopping rush,the comming olym-ic games and the world cross country to be held in Kenya and the 2007 General Election in Kenya
How can l get the email contacts for all Mobile phone companies? l have advertising proposals for them?
i dont think u can do that, but u can always try