This would seem to be a different offer than the Citi card offer currently being circulated. This e-mail came from AA directly and has no reference to Citi cards, even though I am a card holder. The offer is for 15% off your next ticket or 25% more miles, and there are some embargo dates, which seems a bit odd for bonus miles. The offer does seem to be targeted, but as always, YMMV. Link.