I remember reading this http://whichtestwon.com/archives/15976 http://whichtestwon.com/archives/15976 (I managed to view it before you had to pay) - and plainte

I remember reading this http://whichtestwon.com/archives/15976 http://whichtestwon.com/archives/15976 (I managed to view it before you had to pay) - and plaintext won. This site summarises the test: http://www.blueglobalmedia.com/blog/which-converts-better-text-or-image-based-email http://www.blueglobalmedia.com/blog/which-converts-better-te...