Sender Score is a numerical rating that measures the reputation of an email sender based on their email sending practices. It takes into account factors such as email deliverability, spam complaints, and email engagement to determine the trustworthiness and effectiveness of an email sender. A high Sender Score indicates that the sender has a positive track record of sending relevant and valuable emails, while a low Sender Score may suggest that the sender’s emails are often marked as spam or ignored by recipients. This score is used by email service providers and spam filters to determine whether an email should be delivered to the recipient’s inbox or filtered into the spam folder. Maintaining a good Sender Score is crucial for businesses and individuals who rely on email communication to reach their audience and avoid being flagged as spam.