Understand that Cloud email is not secure
I understand that AZURE uses sendgrid.com. Just a few days ago I received an email that had been sent through this service, a phishing email about my apple ID. Yes, Microsoft is in the cloud and I am buying MACS. If the stupidity continues, I will have only macs. I also found another thing. It is happening to others who are posting about it online. http://terryambrose.com/2014/08/the-apple-id-email-scam/
I wouldn't use Microsoft's email if it was the last email provider on earth. You are completely out of touch with what customers want and you haven't produced a marketable product in 5 years.