Overview
Mail-Tester is a service designed to analyze the spamminess of emails. Users send an email to a unique address provided by Mail-Tester, and the service then analyzes the email's content, headers, and server configuration. It checks against various spam filters, blacklists, and authentication methods (SPF, DKIM, DMARC) to provide a comprehensive score. The architecture involves receiving emails, parsing them, and running a series of tests against known spam indicators. Mail-Tester helps users identify and fix issues that might cause their emails to be flagged as spam, thus improving deliverability. It caters to marketers, businesses, and developers who need to ensure their emails reach the intended recipients and not the spam folder. The service offers both a free web interface for occasional use and paid plans for more advanced features and usage.