If there is a similarity between them, as you say, the sender or their domain, right click on one of them and select create rule. The create it where the sender includes and type that in, and select send to spam or add rule send to folder and select spam.
The actual way to create a rule varies between programs but hopefully the above will help you when you find the create rule action within your emails.
Please remember to mark Solved Posts with Best Answer. Doing so helps other customers and saves TalkTalk's Support Team time by only looking at unsolved topics. Thanks, Steve (a fellow customer).
