From the inbox:
August 21: On 19/Jul/2016 you kindly agreed to review the above-referenced manuscript. This is a friendly reminder that your review of this manuscript is due by 26/Nov/2016.
August 19: You agreed to review Manuscript Number [redacted] on 07-15-2016 and your completed review was due by 08-14-2016. Your review is now 5 days late. ...
August 14: I appreciate the time and effort required to prepare a good review, and understand that delays are inevitable. The manuscript review you committed to complete for [journal] is now due. Will you please submit it, or let me know when I might receive it?
So now you know what I'm doing this week (although 26/Nov/2016 is still a ways off!).