I have been receiving e-mails with this number purporting to be that of Sheraton Hotels Toronto Ontario Canada.

I would like to know if it is genuine.

Need more information. Is it a job offer? Planning a vacation? What specifically was your email about? I will tell you that area code (417) is NOT Toronto, Ontario. It's Branson, Missouri. The phone number for the Sheraton Center, in downtown Toronto is (416) 361-1000, plus they have a toll-free number. Not looking good.