G-Skill - sales@gskill.com
MSi - casupport@msi.com
Seasonic - support@seasonic.com
Zotac - sales@zotac.com
Kingston - sales@KingstonXD.com
Razer - ordersupport@razerzone.com
Noctua - support@noctua.at
NZXT - Sales@nzxt.com
EVGA - support@evga.com
Sapphire - proav@sapphiretech.com
Artic Cooling - marketing@artic.ac
Antec comments@antec.com; jocbina@antec.com
Some more: http://www.newegg.com/Info/ContactManufacturer.aspx