From the inbox:
On November 5, 2015 I sent you a paper to review for the [journal]: "[paper title]".
When I sent you this paper I requested that you send me your evaluation by January 2, 2016. We have now sent you two reminders, most recently on January 10, 2016 Still, our records indicate that your report has not yet been received. If you have already sent your report and it has not yet been filed, I apologize for disturbing you again.
However if you have not yet sent your review, I would very much appreciate if you could send me your report within the next 7 days.
Let's see ... I'm asked to review right before the SEA meetings and final exams and then, surprise, I miss the deadline after a 2 week holiday. I read half the paper last night. Ugh.