Transactional emails and marketing emails are a part of my daily life. I get emails from companies I buy things from. Sometimes they're simply an acknowledgement of my purchase, but others times they're also giving me a "heads up" in case my account has been compromised.
Apple, for example, does this when you download something from a "new" device.
Unfortunately somebody or something went a little wrong on their end so I got the below email:
Instead of it printing out the name of the item I downloaded all I got was the rather unhelpful "itemName" variable.
Well it was me that downloaded the item and I got the email less than 5 minutes after I completed the download, so no harm done.
But it does show that even really big companies can screw up their emails!