Received an e-mail this morning, purporting to come from Microsoft, thanking me for my order and informing me that $590 would be taken from my account.There was a phone number to ring if I had any queries.Needless to say, I had not ordered anything and I did not ring the number.
It may depend on who provides your emails, but on mine I have discovered that if you put your cursor on the name of the sender at the top, which is probably some variation of 'microsoft' it will show you the address of who it's really from.
I have had similar ones from Apple. Using the method suggested by Khandro, I have checked the email address of the sender and it’s obvious that it’s not from Apple.