Cook v. Cook, 2012 ONCA 333 shows how dangerous it is to ignore letters from the other side:
 Given the history of the proceedings, the motion judge was entitled to exercise her discretion and refuse the appellant's request for an adjournment.
 We are of the view that it was within the motion judge's discretion to strike the pleadings. ...
 Moreover, we note that respondent's counsel sent at least seven letters to appellant's counsel before the hearing of the motion in an effort to avoid having to proceed with the motion. These efforts were to no avail.