Spam score refers to a numerical value that indicates the likelihood of an email or message being classified as spam by email filters or spam detection systems. It takes into account various factors such as the content of the message, the sender’s reputation, and the frequency of similar messages being marked as spam. A high spam score suggests that the message is more likely to be unwanted or unsolicited, while a low spam score indicates that the message is more likely to be legitimate. Spam scores are used by email providers and marketers to improve email deliverability and avoid being flagged as spam.