Anyone else get this e-mail message?

Subject: U.S., Canada, and Mexico Sale + DOUBLE MILES!

"U.S., Canada and Mexico cities on sale!

Plus Double Miles when you book online!"

I can't find any mention of this on the website, though, and there's no fine print in the email.

Double miles on all tickets, or just the sale fares in that email? Until when?

Seems like a cool deal, but I'm wary without having any details to which to refer.