Ok guys, this is a tool I made with PHP skillz a good while ago and released to contrib+. Now I'm making it available to you all. What this does is turn the text you enter into valid HTML that looks identical to a Blizzard email (the kind with the crazy border and stuff). I even left the images hotlinked from Blizzard's server, so those folk who view the source of your scamming emails don't stand a chance - it looks legit. There is a fake emailer on the site, but for scamming I heartily recommend using mmoMailer.com - Ready, Set, Scam! as it is VASTLY superior.
tl;dr - Makes a blizzard email that looks really legit. No image editing needed.
Blizzard Email Creator
Quick note to Skuddle (the creator/owner of MMOMailer) - If you want the source of this to add to MMOMailer, just drop me a PM.