What is a spam score checker and how does it work?

A spam score checker is a tool that analyzes various attributes of an email or a website/domain to assess its likelihood of being flagged as spam by email providers or search engines. For emails, it typically evaluates factors like sender reputation, IP address history, email content (keywords, links, HTML structure), subject line, and sender authentication records (SPF, DKIM, DMARC). For websites, it examines backlink profiles, content quality, domain age, and potential malicious activity. It assigns a numerical score, where a higher score indicates a greater probability of being considered spam.