Alliance - the company that produces and distributes OAT.
CTV - the network that airs OAT in Canada.
ONCE A THIEF - the staff of OAT
For info on how to contact the OAT actors, see the Cast Page.
Alliance and CTV do accept feedback via e-mail. However, snail-mail will probably have more impact than e-mail. Corporations tend to be old-fashioned. Letters are more likely to be kept and/or forwarded to those in charge than e-mail, which may be seen only by the webmaster.
For Americans, here's a handy-dandy chart that tells you how much postage you have to put on a letter to Canada: