Best Subject Line Ever

Email marketers, take heed. This is how to write an attention-grabbing subject line:

Also - note the "minor detail" they revealed in the message body. Geez. I wonder how their numbers would have changed had the sheep been pregnant in the subject line?!

In addition to the effective subject line, the message illustrates terrific demographic segmentation. I presume that National Geographic must know that I'm in the 18-30 male demographic that instinctively reponds to this kind of thing as there is no way in the world they sent this to their list at large. At least I would hope not...

For what it is worth, I opened the message right away. As you might imagine, the photo is absolutely disgusting.