When was email invented?: The first emails were sent by Ray Tomlinson in 1971. This is where the history of email starts.

A "tailgating attack" is a form of social engineering that emphasizes physical elements over virtual ones.

To read email headers you need to view original messages in your mailbox or use an online tool.

Domain impersonation is when a domain name is used to impersonate another domain name.

An email header parser is a tool that can help you to parse email headers of a specific email message.

The life after p=reject in your DMARC security policy determines the overall strength of their domain’s email security posture.