And yet, it seems to be some sort of meme in the enterprise world to have these sorts of things in every single email: "Please note - This e-mail and any files

And yet, it seems to be some sort of meme in the enterprise world to have these sorts of things in every single email: "Please note - This e-mail and any files transmitted with it may contain confidential or privileged information which is protected by legislation, copyright & the code of practice covering personal information. It is intended solely for the use of the individual or entity to whom it is addressed. If you have received this e-mail in error, please notify the originator. Any disclosure, copying, alteration, distribution, publication or the taking of action in reliance on the contents may be an offence." as a random example. Bonus points for using it it in a footer, where almost by definition, you've read the email before seeing it. I'm sure there's some legal justification for doing so, but it still strikes me as pretty stupid.