IHG Rewards Club has been sending out emails with increased bonus for downloading the IHG App by June 30, 2016.
Instead of the usual 1,000 bonus points for the app download they are now giving 2,000 bonus points instead.
You can access IHG’s web page for the app here.
Here’s the email:
You should check your emails to see if IHG Rewards Club sent out the offer to you as well. They probably emailed this one to accounts with very little or no activity at all.