Say for example you want to convey a detail to someone of a common object, and showing them a picture would be a lot simpler than describing it in words. Would it be illegal to download an image from a (commercial) website and send it to them as an attachment by email or in a group chat on a messaging platform?
As a specific example, a construction worker is sent to the store to pickup supplies. His boss messages him a photo of the type of screw they need. If this photo was downloaded from the store's website (and not just linked) would this be illegal?
Many TOS of websites contain terms such as "you aren't allowed to reproduce or copy any part of this website". This sounds like it expressly prohibits downloading and sending photos. However my understanding is copyright does not apply to subjects that show no originality, for example simple phrases like "have a nice day" are not protected by copyright. Would it depend on the photo, for example a photo of a common screw vs a new type of screw?