Analyzing email headers is a vital technique in combating phishing as they provide essential information about an email's route and origin, which can help determine its legitimacy. As phishing techniques become increasingly sophisticated, using tools like Tines to automate the analysis of these headers is crucial. Email headers can reveal details such as the sender's IP address, the servers involved in sending the email, and whether the message passed authentication checks like DMARC, DKIM, and SPF. Key fields to analyze include the 'Message-ID', which can identify botnet activity, 'Authentication-Results' for authentication status, and 'Trace Fields' like 'Received' and 'Return-Path' to trace the email's path. Platforms like Microsoft Office 365 and Gmail offer methods for extracting and analyzing these headers, allowing organizations to automate the detection of potentially malicious emails.